SOLAR WEATHER
and some interesting moon stuff

compiled by Dee Finney

updated 12-31-08

SEE THE SPECTACULAR CME FROM 2003 - CYCLE 23 AT THE END OF THIS PAGE!

As of 8-6-08 - There were 971 tracked asteroids 
See chart on that date

On October 3, 2008 , there were 986 potentially hazardous asteroids.
See chart on that date
On 10-12-08 - there are 990 potentially hazardous asteroids.
See chart on that date
One - the size of a car exploded over the Sudan on 10-07-08

On 10-29-08 -there are 993 potentially hazardous asteroids.
On 11-6-08 - there are 996 potentially hazardous asteroids.
On 11-24-08 -- there are 999 potentially hazardous asteroids.
On 12-2-08 - there are 1002 potentially hazardous asteroids.
On 12-12-08 - there are 1010 potentially hazardous asteroids.

 

 

 

SPACE WEATHER 2009
 

12-31-08 - SUN is blank today

Current conditions

Solar wind
speed: 512.6 km/sec
density: 2.6 protons/cm3
explanation | more data
Updated: Today at 1726 UT

X-ray Solar Flares
6-hr max: A0
1725 UT Dec31
24-hr: A0
1725 UT Dec31
explanation | more data
Updated: Today at: 1725 UT

NEW ENGLAND FIREBALL: On Dec. 29th, around 9:30 pm EST, a blue-green fireball 100+ times brighter than Venus soared over New England and exploded colorfully in mid-air. Onlookers saw the flash from at least nine US states: eye-witness reports.

Dan Linek of North Bay Shore, New York, was one of the eye witnesses. Combining his own observations with those of others, he created a hand-drawn map of sightings and the probable location of the fireball when it exploded:

12-30-08 - No sunspot today

Current conditions

Solar wind
speed: 326.6 km/sec
density: 18.2 protons/cm3
explanation | more data
Updated: Today at 2245 UT

X-ray Solar Flares
6-hr max: A0
1915 UT Dec30
24-hr: A0
1050 UT Dec30
explanation | more data
Updated: Today at: 1915 UT

 

12-29-08 - no sunspot today

Current conditions

Solar wind
speed: 295.5 km/sec
density: 0.3 protons/cm3
explanation | more data
Updated: Today at 2246 UT

X-ray Solar Flares
6-hr max: A0
2245 UT Dec29
24-hr: A0
2245 UT Dec29
explanation | more data
Updated: Today at: 2245 UT
 
ALIGNMENT OF THE MOON, VENUS AND JUPITER:

This is a spectacle that will repeat itself after 44 long years. So get ready and don’t miss the chance to observe the Moon, Venus and Jupiter lining up in the space.

The show begins at around 4:13 local time when the moon will join with Jupiter and Venus. But the time is before the sunset and therefore the planets will not be clearly visible from the naked eye. So take a binocular and observe the event as it takes place.

By 4:25 pm Venus will be seen with the naked eye. However Jupiter will remain obscure. 25 minutes later, as the sky turns darker, all the planets will flash like diamonds.

Another spectacular thing will take place during this time. The dark portion of the moon reflects the earthshine. Thus it will have a faint glow of a blue and green shade. Though this can be observed with the naked eye, a binocular will make it even more prominent.

This extraordinary cosmic phenomenon has already taken place in the Southern half of the world. There the event was more like a “smiley face” but in the Northern half it is expected to resemble a “frown”.

The same conjunction between Jupiter and Venus will take place in 2011 and 2012. But both times the two planets will not have the Moon with them. The next time when the trio will once again join together will be 18th November of 2052. Now that is a long time ahead.

Do not wait for that and just go on the roof and place your binocular to the southwest horizon and thrill yourself. There the crescent Moon and the two planets will form the triangle, with Venus below and Jupiter on the top of it.

Do not waste any of the minutes as the show is speculated to last for not more than a couple of hours. Then the Moon and the planets will sink below the horizon making it invisible.

However the visibility is one of the main problems for the stargazers. If the sky is clouded they are helpless. But there is not need to feel sorry for that. Because you can observe the event for the next few days as the trio will repeat their show. But of
course it will not be as bright as the first day.

 

 

12-28-08 - No sunspot today

Current conditions

Solar wind
speed: 321.3 km/sec
density: 0.5 protons/cm3
explanation | more data
Updated: Today at 2247 UT

X-ray Solar Flares
6-hr max: A0
2245 UT Dec28
24-hr: A0
0640 UT Dec28
explanation | more data
Updated: Today at: 2245 UT

CALIFORNIA FIREBALL: A remarkable fireball blazed across Califonia on Dec. 27th around 1:50 am PST. Its brilliant blue-green light caught the attention of onlookers (some inside their homes) all the way from San Francisco Bay in the north to the Los Angeles metropolitan area in the south--a range of more than 340 miles. According to one account, the object exploded with a thunderous boom, producing a spray of golden-colored fragments

"It was as if someone had set off a rescue flare that instantly bathed the countryside in whitish blue-green light," reports Grant Bentley of Bishop, CA. "At one point, the path of the meteor went behind a cirrus-stratus cloud that it backlit in snowy green light. After a brilliant show of less than three seconds, it was gone without a trace. This was easily the most massive object I have ever seen burning up as it entered the Earth's atmosphere."

A solar wind stream flowing from the indicated coronal hole
should arrive on Dec. 30th or 31st.
Credit: SOHO Extreme UV Telescope

 

12-27-08 - no sunspots today
Current conditions

Solar wind
speed: 321.3 km/sec
density: 0.5 protons/cm3
explanation | more data
Updated: Today at 2247 UT

X-ray Solar Flares
6-hr max: A0
2245 UT Dec28
24-hr: A0
0640 UT Dec28
explanation | more data
Updated: Today at: 2245 UT

 

12-26-08 - no sunspot today Current conditions

Solar wind
speed: 426.1 km/sec
density: 0.8 protons/cm3
explanation | more data
Updated: Today at 0046 UT

X-ray Solar Flares
6-hr max: A0
2355 UT Dec25
24-hr: A2
1300 UT Dec25
explanation | more data
Updated: Today at: 2355 UT

LAST AURORAS OF 2008: They're coming, the last auroras of 2008. The source of the display is a coronal hole photographed earlier today by Japan's Hinode spacecraft:

Coronal holes are places in the sun's atmosphere where the sun's magnetic field opens up and allows the solar wind to escape. A stream of solar wind flowing from this coronal hole should reach Earth on Dec. 30th or 31st. The impact could light up the Arctic Circle, punctuating the year with aurora borealis.

Although 2008 has been a year of remarkably low solar activity, polar sky watchers nevertheless have enjoyed many good geomagnetic storms. Galleries: January, February, March, April, May, June, July, August September, October, November, December.
 

12-25-08 - no sunspot today

Current conditions

Solar wind
speed: 437.0 km/sec
density: 0.9 protons/cm3
explanation | more data
Updated: Today at 2247 UT

X-ray Solar Flares
6-hr max: A0
2245 UT Dec25
24-hr: A2
1300 UT Dec25
explanation | more data
Updated: Today at: 2245 UT

EDGE-ON FOR THE HOLIDAYS: You look through the telescope. Blink. Shake your head and look again. The planet you expected to see in the eyepiece is not the one that's actually there. Too much eggnog? No, it's just Saturn's crazy Christmas tilt:

Amateur astronomer Paulo Casquinha took the picture last night from his backyard observatory in Quinta do Anjo, Portugal. It shows how Saturn's rings are almost edge-on to Earth this holiday season. Viewed from the side, the normally wide and bright rings have become a shadowy line bisecting Saturn's two hemispheres--a scene of rare beauty.

"Everyone should take a look before the rings begin to open up again at the end of the month," says Casquinha. A nice bonus: When the rings are thin, Saturn's moons become easier to see. "Note the small spot above the rings on the right; that's Rhea."

more images: from Masa Nakamura of Otawara, Tochigi, Japan; from Koshu Endo of Tokyo Japan (note: Endo's video shows an Earth-orbiting satellite zipping by Saturn)

CHRISTMAS PROMINENCE: So, you received a solar telescope for Christmas? Perfect timing. A plume of hot gas is spewing over the northeastern limb of the sun, beckoning for attention. Take a look!

photos: from S. Billings et al of South Portland, Maine; from Mike Borman of Evansville, Indiana; from Francisco A. Rodriguez of Gran Canaria, Canary Islands; from James Screech of Bedford, England; from Peter Desypris of Athens, Greece; from Stephen Ames of Hodgenville, Kentucky;

12-24-08  no sunspot - a sunspot developing?  No
 

Current conditions

Solar wind
speed: 499.4 km/sec
density: 0.7 protons/cm3
explanation | more data
Updated: Today at 2247 UT

X-ray Solar Flares
6-hr max: A0
2245 UT Dec24
24-hr: A0
2245 UT Dec24
explanation | more data
Updated: Today at: 2245 UT

NEW SUNSPOTS: This morning, Dec. 24th, NASA's STEREO-B spacecraft photographed a pair of active regions emerging in the sun's southern hemisphere. Clouds of hot glowing gas detected by STEREO's extreme UV telescope probably mask a pair of new-cycle sunspots underneath:

The clouds and spots are not yet visible from Earth. STEREO-B is stationed over the sun's eastern limb where it can see things up to three days before the sun's rotation turns them toward our planet. So, consider this a sneak preview.

 

12-23-08 - No sunspot today

Current conditions

Solar wind
speed: 537.5 km/sec
density: 0.5 protons/cm3
explanation | more data
Updated: Today at 2247 UT

X-ray Solar Flares
6-hr max: A0
2245 UT Dec23
24-hr: A0
2245 UT Dec23
explanation | more data
Updated: Today at: 2245 UT

 

12-22-08 - No sunspot today

Current conditions

Solar wind
speed: 422.0 km/sec
density: 4.5 protons/cm3
explanation | more data
Updated: Today at 2246 UT

X-ray Solar Flares
6-hr max: A0
1915 UT Dec22
24-hr: A0
1915 UT Dec22
explanation | more data
Updated: Today at: 2245 UT

 

12-21-08 - The sun is blank today

Current conditions

Solar wind
speed: 343.6 km/sec
density: 1.8 protons/cm3
explanation | more data
Updated: Today at 0006 UT

X-ray Solar Flares
6-hr max: A0
2350 UT Dec20
24-hr: A0
0050 UT Dec20
explanation | more data
Updated: Today at: 2350 UT

 

12-20-08 - The sun is blank today

Current conditions

Solar wind
speed: 298.7 km/sec
density: 3.5 protons/cm3
explanation | more data
Updated: Today at 0440 UT

X-ray Solar Flares
6-hr max: A0
2310 UT Dec19
24-hr: A0
2310 UT Dec19
explanation | more data
Updated: Today at: 2355 UT

 

12-19-08 - No sunspots today

Current conditions

Solar wind
speed: 326.4 km/sec
density: 2.4 protons/cm3
explanation | more data
Updated: Today at 2247 UT

X-ray Solar Flares
6-hr max: A0
2245 UT Dec19
24-hr: A0
0135 UT Dec19
explanation | more data
Updated: Today at: 2245 UT

RADIO METEORS: The Ursid meteor shower caused by Comet 8P/Tuttle peaks this year on Dec. 22nd. About a dozen meteors per hour will fly out of the Little Dipper (Ursa Minor) as Earth passes through the comet's debris stream. Watching these northern meteors can be a chilling experience, so why not stay inside and listen to them instead? Spaceweather.com is broadcasting live audio from the Air Force Space Surveillance Radar in Texas. When a meteor passes over the radar--"ping"--there is an echo. Give it a try; feedback is welcomed.

 

12-18-08 - No sunspots today

Current conditions

Solar wind
speed: 279.7 km/sec
density: 0.7 protons/cm3
explanation | more data
Updated: Today at 2247 UT

X-ray Solar Flares
6-hr max: A0
2245 UT Dec18
24-hr: A0
0725 UT Dec18
explanation | more data
Updated: Today at: 2245 UT

 

12-17-08 - No sunspots today

Current conditions

Solar wind
speed: 320.3 km/sec
density: 0.3 protons/cm3
explanation | more data
Updated: Today at 2246 UT

X-ray Solar Flares
6-hr max: A0
2245 UT Dec17
24-hr: A0
2245 UT Dec17
explanation | more data
Updated: Today at: 2245 UT

 

12-16-08 - No sunspots today

Current conditions

Solar wind
speed: 357.4 km/sec
density: 2.4 protons/cm3
explanation | more data
Updated: Today at 2247 UT

X-ray Solar Flares
6-hr max: A0
2245 UT Dec16
24-hr: A0
2245 UT Dec16
explanation | more data
Updated: Today at: 2245 UT

SOLAR ACTIVITY: Hours ago, something on the far side of the sun exploded and hurled a massive cloud of debris (a CME) over the eastern limb. Using a coronagraph to block the sun's glare, the Solar and Heliospheric Observatory (SOHO) photographed the cloud expanding into space:

NASA's Stereo-B spacecraft is stationed over the sun's eastern limb, but it was not taking pictures at the probable time of the eruption, so details of the blast are unknown. The CME could herald an active region (e.g., a sunspot or perhaps an unstable magnetic filament) turning to face Earth in the days ahead. Stay tuned for updates.

A Giant Breach in Earth's Magnetic Field 12.16.2008

Dec. 16, 2008: NASA's five THEMIS spacecraft have discovered a breach in Earth's magnetic field ten times larger than anything previously thought to exist. Solar wind can flow in through the opening to "load up" the magnetosphere for powerful geomagnetic storms. But the breach itself is not the biggest surprise. Researchers are even more amazed at the strange and unexpected way it forms, overturning long-held ideas of space physics.

"At first I didn't believe it," says THEMIS project scientist David Sibeck of the Goddard Space Flight Center. "This finding fundamentally alters our understanding of the solar wind-magnetosphere interaction."

The magnetosphere is a bubble of magnetism that surrounds Earth and protects us from solar wind. Exploring the bubble is a key goal of the THEMIS mission, launched in February 2007. The big discovery came on June 3, 2007, when the five probes serendipitously flew through the breach just as it was opening. Onboard sensors recorded a torrent of solar wind particles streaming into the magnetosphere, signaling an event of unexpected size and importance. One of the THEMIS probes exploring the space around Earth, an artist's concept. [more]

"The opening was huge—four times wider than Earth itself," says Wenhui Li, a space physicist at the University of New Hampshire who has been analyzing the data. Li's colleague Jimmy Raeder, also of New Hampshire, says "1027 particles per second were flowing into the magnetosphere—that's a 1 followed by 27 zeros. This kind of influx is an order of magnitude greater than what we thought was possible."

The event began with little warning when a gentle gust of solar wind delivered a bundle of magnetic fields from the Sun to Earth. Like an octopus wrapping its tentacles around a big clam, solar magnetic fields draped themselves around the magnetosphere and cracked it open. The cracking was accomplished by means of a process called "magnetic reconnection." High above Earth's poles, solar and terrestrial magnetic fields linked up (reconnected) to form conduits for solar wind. Conduits over the Arctic and Antarctic quickly expanded; within minutes they overlapped over Earth's equator to create the biggest magnetic breach ever recorded by Earth-orbiting spacecraft.

Above: A computer model of solar wind flowing around Earth's magnetic field on June 3, 2007. Background colors represent solar wind density; red is high density, blue is low. Solid black lines trace the outer boundaries of Earth's magnetic field. Note the layer of relatively dense material beneath the tips of the white arrows; that is solar wind entering Earth's magnetic field through the breach. Credit: Jimmy Raeder/UNH. [larger image]

The size of the breach took researchers by surprise. "We've seen things like this before," says Raeder, "but never on such a large scale. The entire day-side of the magnetosphere was open to the solar wind."

The circumstances were even more surprising. Space physicists have long believed that holes in Earth's magnetosphere open only in response to solar magnetic fields that point south. The great breach of June 2007, however, opened in response to a solar magnetic field that pointed north.

"To the lay person, this may sound like a quibble, but to a space physicist, it is almost seismic," says Sibeck. "When I tell my colleagues, most react with skepticism, as if I'm trying to convince them that the sun rises in the west."

Here is why they can't believe their ears: The solar wind presses against Earth's magnetosphere almost directly above the equator where our planet's magnetic field points north. Suppose a bundle of solar magnetism comes along, and it points north, too. The two fields should reinforce one another, strengthening Earth's magnetic defenses and slamming the door shut on the solar wind. In the language of space physics, a north-pointing solar magnetic field is called a "northern IMF" and it is synonymous with shields up!  

"So, you can imagine our surprise when a northern IMF came along and shields went down instead," says Sibeck. "This completely overturns our understanding of things."

Northern IMF events don't actually trigger geomagnetic storms, notes Raeder, but they do set the stage for storms by loading the magnetosphere with plasma. A loaded magnetosphere is primed for auroras, power outages, and other disturbances that can result when, say, a CME (coronal mass ejection) hits.

The years ahead could be especially lively. Raeder explains: "We're entering Solar Cycle 24. For reasons not fully understood, CMEs in even-numbered solar cycles (like 24) tend to hit Earth with a leading edge that is magnetized north. Such a CME should open a breach and load the magnetosphere with plasma just before the storm gets underway. It's the perfect sequence for a really big event."

Sibeck agrees. "This could result in stronger geomagnetic storms than we have seen in many years."

A video version of this story may be found here. For more information about the THEMIS mission, visit http://nasa.gov/themis

 

12-15-08  - No sunspots today

Current conditions

Solar wind
speed: 337.9 km/sec
density: 1.4 protons/cm3
explanation | more data
Updated: Today at 2247 UT

X-ray Solar Flares
6-hr max: A0
2245 UT Dec15
24-hr: A0
2245 UT Dec15
explanation | more data
Updated: Today at: 2245 UT

GREAT GEMINIDS: The Geminid meteor shower peaked over the weekend and "it was a great show," says NASA astronomer Bill Cooke. "On Saturday night, our all-sky recording system at the Marshall Space Flight Center in Alabama recorded more than 80 bright Geminids in spite of clouds and bright moonlight." Click on the composite image, below, to launch a 4 MB movie:

Another NASA camera with clearer skies in Georgia recorded even more meteors including a rapid-fire flurry of three at once: movie. "This could be one of the best displays of Geminids we've ever seen," says Cooke.

Preliminary counts by the International Meteor Organization indicate that the shower peaked at 160 meteors per hour during the early hours of Dec. 14th. Earth is now exiting the Geminid debris stream and meteor rates are falling--but not yet to zero. Subsiding activity could continue for several nights to come: live updates.

UPDATED: 2008 Geminid Meteor Gallery
[
previous years: 2007, 2006, 2004, 2002, 2001]

 

12-14-08 - No sunspots today

Current conditions

Solar wind
speed: 319.4 km/sec
density: 1.5 protons/cm3
explanation | more data
Updated: Today at 2247 UT

X-ray Solar Flares
6-hr max: A0
2245 UT Dec14
24-hr: A0
2245 UT Dec14
explanation | more data
Updated: Today at: 2245 UT

2008 Geminid Meteor Gallery
[previous years: 2007, 2006, 2004, 2002, 2001]

 

12-13-08 - No sunspots today

Current conditions

Solar wind
speed: 394.0 km/sec
density: 0.9 protons/cm3
explanation | more data
Updated: Today at 2247 UT

X-ray Solar Flares
6-hr max: A0
1915 UT Dec13
24-hr: A0
1915 UT Dec13
explanation | more data

A's STEREO spacecraft photographed a coronal mass ejection
(CME) billowing over the limb of the sun.

CME MOVIE http://sungrazer.nrl.navy.mil/images/p2003_sm_short.mov

Now play it again. Did you see the comet? It's just a speck among the stars and billowing debris; look for it along this ). It was discovered in May 2003 by astronomer Eric Christensen and then, as sometimes happens to new comets with poorly-known orbits, it was lost again. Comet Christensen went missing for more than five years until STEREO found it again. Spacecraft (especially SOHO) have discovered many comets, but this is the first time a spacecraft has recovered one: full story.

 

12-12-08 - no sunspots today

Current conditions

Solar wind
speed: 427.6 km/sec
density: 2.7 protons/cm3
explanation | more data
Updated: Today at 1704 UT

X-ray Solar Flares
6-hr max: A6
1110 UT Dec12
24-hr: A8
1045 UT Dec12
explanation | more data
Updated: Today at: 1700 UT
 
On December 12, 2008 there were 1010 potentially hazardous asteroids.

Dec. 2008 Earth-asteroid encounters:
Asteroid
Date(UT)
Miss Distance
Mag.
Size
2008 WY94
Dec. 5
3.2 LD
19
35 m
2008 WG14
Dec. 5
4.8 LD
17
49 m
2008 XK
Dec. 6
1.7 LD
17
15 m
2008 XC1
Dec. 12
4.3 LD
16
102 m
2008 XB2
Dec. 13
5.8 LD
18
47 m
2006 VB14
Dec. 14
36 LD
15
795 m
2008 EV5
Dec. 23
8.4 LD
13
435 m

Notes: LD means "Lunar Distance." 1 LD = 384,401 km, the distance between Earth and the Moon. 1 LD also equals 0.00256 AU. MAG is the visual magnitude of the asteroid on the date of closest approach.

 

12-11-08 - Sunspot 1009 on far right edge of sun

Current conditions

Solar wind
speed: 418.1 km/sec
density: 2.6 protons/cm3
explanation | more data
Updated: Today at 2245 UT

X-ray Solar Flares
6-hr max: A1
1950 UT Dec11
24-hr: B5
0925 UT Dec11
explanation | more data
Updated: Today at: 2245 UT
 
12-10-08 New sunspot 1009

New-cycle sunspot 1009 is rotating over the sun's western limb. The spot is crackling with B-class solar flares; the explosions could hurl material over the limb as the sunspot disappears. Readers, if you have a solar telescope, keep an eye on the western limb. Credit: SOHO/MDI
 

12-9-08 - No sunspot today

Current conditions

Solar wind
speed: 400.1 km/sec
density: 0.6 protons/cm3
explanation | more data
Updated: Today at 0346 UT

X-ray Solar Flares
6-hr max: A0
2355 UT Dec08
24-hr: A0
2355 UT Dec08
explanation | more data
Updated: Today at: 2355 UT


 
AURORA WATCH: A solar wind stream is heading for Earth and it could spark geomagnetic storms around the arctic circle when it arrives on Dec. 11th. High-latitude sky watchers should be alert for auroras.

 

12-8-08 - No sunspots today

Current conditions

Solar wind
speed: 425.1 km/sec
density: 0.6 protons/cm3
explanation | more data
Updated: Today at 2247 UT

X-ray Solar Flares
6-hr max: A0
2245 UT Dec08
24-hr: A0
2245 UT Dec08
explanation | more data
Updated: Today at: 2245 UT

COLOR-CODED SUNSPOTS: According to one leading solar physicist, the sun is turning blue. David Hathaway of the NASA Marshall Space Flight Center is using red and blue to tag sunspots of the old and new solar cycles. When he plots the color-coded sunspot numbers, it's clear a change is taking place.

"New Solar Cycle 24 is on the upswing while old Solar Cycle 23 is decaying," he says. The sun is still in the pits of a deep solar minimum, he points out, but the little blue bars in Hathaway's plot show that it won't last forever. An increasing number of new-cycle sunspots in the months ahead should propel the sun out of the doldrums, eventually leading to a full-fledged Solar Max around 2012.

Feeling blue? Now you know why. Stay tuned for updates

 

12-7-08 No sunspots today

Current conditions

Solar wind
speed: 521.7 km/sec
density: 0.4 protons/cm3
explanation | more data
Updated: Today at 1854 UT

X-ray Solar Flares
6-hr max: A0
1810 UT Dec07
24-hr: A0
1810 UT Dec07
explanation | more data
Updated: Today at: 1845 UT

 

12-6-08  There are no sunspots today

Current conditions

Solar wind
speed: 515.9 km/sec
density: 1.9 protons/cm3
explanation | more data
Updated: Today at 1226 UT

X-ray Solar Flares
6-hr max: A0
1225 UT Dec06
24-hr: A0
dText">
explanation | more data
Updated: Today at: 1225 UT

MONSTER PROMINENCE: Readers, if you have a solar telescope, train it on the edge of the sun. An enormous filament of plasma is swirling over the eastern limb: SOHO image.

more images: from Hank Bartlett of Newburgh, Ontario, Canada; from Stephen Ames of Hodgenville, Kentucky; from M. Ugro et al. of South Portland, Maine; from Roy Golisano of Milford, New Hampshire

Space Weather News for Dec. 6, 2008
http://spaceweather.com

COLORADO FIREBALL:  Last night, a fireball one hundred times brighter than the full Moon lit up the sky near Colorado Springs, Colorado. Astronomer Chris Peterson photographed the event using an all-sky video camera dedicated to meteor studies. "In seven years of operation, this is the brightest fireball I've ever recorded. I estimate the terminal explosion at magnitude -18."  Meteors this bright are called superbolides; they are caused by small (meter-class) asteroids and are likely to pepper the ground with meteorites when they explode. 

  • Camera name: Cloudbait (map)
  • Camera description: Cloudbait Observatory
  • Camera coordinates: N38.786111 W105.483611
  • Camera altitude: 2768 meters
  • Total events for this site: 15906
  • Event time: 2008-12-06 01:06:28 MST
  • Image coordinates: (0.407,0.251) - (0.516,0.179)
  • Azimuth: 79.8 - 117.9
  • Altitude: - - -
  • Approximate duration: 1.0 seconds (28 video frames)
  • Fireball: Yes

See VIDEO

In seven years of operation, this is the brightest fireball I've ever recorded," says Peterson. "I estimate the terminal explosion at magnitude -18, more than 100 times brighter than a full Moon."

Fireballs this bright belong to a rare category of meteors called superbolides. They are caused by small asteroids measuring a few to 10 meters in diameter and massing hundreds of metric tons. Superbolides trigger seismic detectors on the ground, produce waves of infrasound that can travel thousands of miles, and they are tracked by military satellites scanning Earth for nuclear explosions. Recent examples include the El Paso fireball of 1997 and the Slovenian Superbolide of 2007.

Last night's fireball is on the low end of the superbolide scale. Nevertheless, it was still a beauty and likely peppered the ground with meteorites when it exploded. Sighting reports are welcomed; they could help guide the tracking and recovery of debris.

LISTEN! 250 miles south of the fireball, radio astronomer Thomas Ashcraft of New Mexico photographed the flash and recorded radio echoes from the superbolide's ion trail. Click here to listen.

 

12-5-08 There are no sunspots today

Current conditions

Solar wind
speed: 426.3 km/sec
density: 1.5 protons/cm3
explanation | more data
Updated: Today at 1942 UT

X-ray Solar Flares
6-hr max: A0
1945 UT Dec05
24-hr: A0
1945 UT Dec05
explanation | more data
Updated: Today at: 1945 UT
 
12-4-08 - There are no sunspots today

Current conditions

Solar wind
speed: 383.6 km/sec
density: 1.1 protons/cm3
explanation | more data
Updated: Today at 2245 UT

X-ray Solar Flares
6-hr max: A0
2245 UT Dec04
24-hr: A0
2245 UT Dec04
explanation | more data
Updated: Today at: 2245 UT

GREAT CONJUNCTION: Postulate: One moon + two planets = the sky show of the year. The proof may be found in this photo submitted by Jamie Russell from the United Kingdom's Isle of Wight:

He opened the shutter of his Canon 300D on the evening of Dec. 1st moments after Venus emerged from behind the Moon. Meanwhile, Jupiter looked on from above. Together, the ensemble beamed down on St. Catherine's Lighthouse, built 170 years ago atop the Niton Undercliffe. "It was a lovely scene," he says.

All around the world, sky watchers watched with pleasure as Venus, Jupiter and the Moon gathered in one tiny patch of sky and then dispersed again. But was it really the sky show of the year? Browse the gallery and decide for yourself:

GRAND CONJUNCTION PHOTO GALLERY
 

12-03-08  - The sun is blank today

Current conditions

Solar wind
speed: 450.9 km/sec
density: 1.0 protons/cm3
explanation | more data
Updated: Today at 0145 UT

X-ray Solar Flares
6-hr max: A0
2355 UT Dec03
24-hr: A0
2355 UT Dec03
explanation | more data
Updated: Today at: 2355 UT

Earth is entering a solar wind stream flowing from the indicated coronal hole. Credit: SOHO Extreme UV Telescope

 

12-02-08 No sunspot today

Current conditions

Solar wind
speed: 295.5 km/sec
density: 3.7 protons/cm3
explanation | more data
Updated: Today at 2247 UT

solarWindUpdatedText"> 2245 UT Dec02
24-hr: A0
2245 UT Dec02
explanation | more data
Updated: Today at: 2245 UT

LUNAR OCCULTATION OF VENUS: En route to last night's Great Conjunction, the Moon ran right over Venus. The event, which astronomers call a "lunar occultation," happened directly over Europe where Romanian photographer Stanescu Octavian took this picture:

I caught Venus just before it disappeared behind the dark edge of the Moon," he says. Venus remained hidden for more than an hour, then popped out again to form a spectacular triangle with Jupiter and Luna as opposing vertices. "What a very nice vision!"

Lunar occultations of Venus happen about twice a year. The next two: Feb 28, 2009, over Antarctica and Apr. 22, 2009, over North America. The North American occultation is going to be good, occuring in a lovely pre-dawn Spring sky while Mars hovers nearby. Mark your calendar.

more images: from Frank Ryan Jr at The Burren, Co. Clare, Ireland; from Erwan Henry of Saint-Rieul, Brittany, France; from Monika Landy-Gyebnar of Balatonakarattya, Hungary; from Brian Fitzsimons of Cavan, Ireland; from GĂĽnther Strauch of Borken, NRW, Germany; from James Canvin of Cullompton, Devon, UK; from Wojciech Piskorz of Gliwice, Poland; from Claudio Bottari of Sava, Italy; from Eddie Guscott of Corringham, Essex, England; from John Durston of Plymouth, UK; from Martin Campbell of Dungannon, N.Ireland; from Elias Chasiotis at the Valley of the Temples, Agrigento, Sicily, Italy; from Guenter Kleinschuster of Feldbach, Styria, Austria; from John Fitzsimons of Sligo, Ireland; from Luigi Fiorentino of Bari, Italy;

Great Conjunction Photo Gallery

 

12-01-08 - No sunspot today

Current conditions

Solar wind
speed: 298.9 km/sec
density: 1.4 protons/cm3
explanation | more data
Updated: Today at 2246 UT

X-ray Solar Flares
6-hr max: A0
2210 UT Dec01
24-hr: A0
2210 UT Dec01
explanation | more data
Updated: Today at: 2245 UT

A solar wind stream flowing from the indicated coronal hole should reach Earth on Dec. 3rd or 4th. Credit: SOHO Extreme UV

Near Earth Asteroids
Potentially Hazardous Asteroids (PHAs) are space rocks larger than approximately 100m that can come closer to Earth than 0.05 AU. None of the known PHAs is on a collision course with our planet, although astronomers are finding new ones all the time.

On December 2, 2008 there were 1002 potentially hazardous asteroids.

Dec. 2008 Earth-asteroid encounters:
Asteroid
Date(UT)
Miss Distance
Mag.
Size
2008 WY94
Dec. 5
3.2 LD
19
35 m
2008 WG14
Dec. 5
4.8 LD
17
49 m
2006 VB14
Dec. 14
36 LD
15
795 m
2008 EV5
Dec. 23
8.4 LD
13
435 m

Notes: LD means "Lunar Distance." 1 LD = 384,401 km, the distance between Earth and the Moon. 1 LD also equals 0.00256 AU. MAG is the visual magnitude of the asteroid on the date of closest approach.

 

11-30-08 - No sunspots today

Current conditions

Solar wind
speed: 363.2 km/sec
density: 1.1 protons/cm3
explanation | more data
Updated: Today at 2247 UT

X-ray Solar Flares
6-hr max: A0
2245 UT Nov30
24-hr: A0
2245 UT Nov30
explanation | more data
Updated: Today at: 2245 UT

During the next 24 hours, Luna will continue her approach, converging with the two planets to form a spectacular sunset triangle on Monday, Dec. 1st. The bright 3-way conjunction will be visible from all parts of world, even from light-polluted cities. So pause when the sun goes down and take a look outside; you'll be glad you did. Sky maps: Nov. 30, Dec 1.

more images: from Stephen O'Meara of Kilauea, Volcano, Hawaii; from Brian Kennedy of Orlando, Florida; from John Gauvreau of Binbrook, Ontario, Canada; from Stephen McCaul on the coast of Scotland overlooking the Isle of Skye; from Claudio Bottari of Locorotondo, Italy; from Bum-Suk Yeom of Daejeon, South Korea; from Mike O'Leary of San Diego, CA; from Bill Smith of Cherry Creek, NY; from Albert Engert of WĂĽrzburg, Germany; from Marion Haligowski of Phoenix, Arizona; from Gregg Waldron of Morristown, NJ; from Joe Ricci of Rochester, New York; from Katy and John Stetson of Portland, Maine; from Adrian Guzman of San Jose, California; from Claudio Pincelli of Southampton, Massachusetts; from Thierry Demange of Erstein, Alsace, France; from Martin Mc Kenna of Maghera, Co. Derry, N. Ireland;

THE OTHER CONJUNCTION: While all eyes are on Venus and Jupiter in the evening sky, another conjunction is taking place at high noon. Mars and Mercury are having a close encounter of their own within 3o of the sun:

 

11-29-08  Sun is blank today

Current conditions

Solar wind
speed: 402.5 km/sec
density: 1.1 protons/cm3
explanation | more data
Updated: Today at 1806 UT

X-ray Solar Flares
6-hr max: A0
1320 UT Nov29
24-hr: A0
1320 UT Nov29
explanation | more data
Updated: Today at: 1805 UT

NOT-A-SUNSPOT: A large, diffuse magnetic dipole is emerging in the sun's northern hemisphere: map. It's too spread out to form a sunspot, but it may prove interesting nevertheless. In the neutral folds of such regions, dark filaments of plasma are known to form and sometimes erupt.

SUNSET PLANETS: When the sun goes down tonight, step outside and look southwest. Venus and Jupiter are having a stunning close encounter in the twilight sky. Saied Bahrami Nezhad sends this picture from the Lut desert near Kerman, Iran:

"Seeing the planets so close together was a dreamy experience," says Nezhad. And it's about to get dreamier. On Nov. 30th and Dec. 1st, the crescent moon will leap up from the horizon, joining Jupiter and Venus in a three-way conjunction that some astronomers are calling "the best sky show of the year." Don't miss a single night: Nov. 28, 29, 30, Dec 1.

more images: from Zlatko Pasko of Stara Pazova, Serbia; from Patrick Boomer of Alberta, Canada; from Jens Hackmann of Weikersheim, Germany; from Mahdi Zamani of Kan, Iran; from Cindy Safina of Tsimshatsui, Hong Kong; from Alan Conrad of Liverpool,Nova Scotia; from Jim Werle of Henderson, Nevada; from Martin Mc Kenna of Maghera, Co. Derry, N. Ireland

 

11-28-08  sun is blank today - Where did yesterday's sunspot go?

Current conditions

Solar wind
speed: 480.9 km/sec
density: 1.3 protons/cm3
explanation | more data
Updated: Today at 2247 UT

X-ray Solar Flares
6-hr max: A0
2245 UT Nov28
24-hr: A0
2245 UT Nov28
explanation | more data
Updated: Today at: 2245 UT
 
11-27-08 - A new sunspot forming

Current conditions

Solar wind
speed: 498.6 km/sec
density: 0.9 protons/cm3
explanation | more data
Updated: Today at 2241 UT

X-ray Solar Flares
6-hr max: A0
2245 UT Nov27
24-hr: A0
1105 UT Nov27
explanation | more data
Updated: Today at: 2245 UT

THANKSGIVING SUN: This morning Greg Piepol of Rockville, Maryland, looked through the eyepiece of his backyard solar telescope and observed a very curious sunspot:

"Happy Thanksgiving!" says Piepol. "I must have been thinking about dinner because when I did a double-take the turkey was gone." The real Thanksgiving sun is pictured here. A new sunspot is forming near the center of the sun's disk but it has not yet formed a dark turkey-core. Stay tuned for updates.

more images: from Andy Yeung of Hong Kong; from Stephen Ames of Hodgenville, Kentucky

 

11-26-08 - No sunspot today

Current conditions

Solar wind
speed: 637.3 km/sec
density: 0.5 protons/cm3
explanation | more data
Updated: Today at 2256 UT

X-ray Solar Flares
6-hr max: A0
2245 UT Nov26
24-hr: A0
2245 UT Nov26
explanation | more data
Updated: Today at: 2245 UT

 

11-25-08  The sun is blank today

Current conditions

Solar wind
speed: 514.5 km/sec
density: 7.5 protons/cm3
explanation | more data
Updated: Today at 0816 UT

X-ray Solar Flares
6-hr max: A0
0815 UT Nov25
24-hr: A0
0815 UT Nov25
explanation | more data
Updated: Today at: 0815 UT

 

11-24-08 The sun is blank today

Current conditions

Solar wind
speed: 282.8 km/sec
density: 3.0 protons/cm3
explanation | more data
Updated: Today at 2242 UT

X-ray Solar Flares
6-hr max: A0
2245 UT Nov24
24-hr: A0
2245 UT Nov24
explanation | more data
Updated: Today at: 2245 UT

EXPLOSION IN PROGRESS: An explosion is underway on the sun. The source of the blast lies out of sight somewhere over the sun's western limb, but the ejecta is visible as it billows into space:

Click to view a 1 MB movie

A coronagraph onboard the Solar and Heliospheric Observatory (SOHO) is monitoring the progress of the expanding CME. The cloud is not directed at Earth and should cause no geomagnetic activity on our planet. It is, however, a promising "sign of life" on the sun. Slowly but surely, solar minimum is coming to an end.
 

Nov. 2008 Earth-asteroid encounters:
Asteroid
Date(UT)
Miss Distance
Mag.
Size
2008 TX3
Nov. 1
9 LD
19
45 m
2008 UT95
Nov. 2
1.5 LD
17
15 m
2008 UC7
Nov. 2
4.5 LD
20
17 m
2008 VM
Nov. 3
0.1 LD
20
4 m
2008 VA4
Nov. 4
7.7 LD
17
49 m
2008 VB4
Nov. 4
1.3 LD
18
10 m
2008 VC
Nov. 4
4.4 LD
20
18 m
4179 Toutatis
Nov. 9
20 LD
14
3.8 km
2008 WO2
Nov. 16
1.0 LD
20
5 m
2004 XK3
Nov. 18
1.8 LD
15
60 m
2008 VZ3
Nov. 22
5.7 LD
18
55 m
2008 WD
Nov. 24
6.9 LD
19
30 m
2008 WC
Nov. 26
5.1 LD
19
23 m

Notes: LD means "Lunar Distance." 1 LD = 384,401 km, the distance between Earth and the Moon. 1 LD also equals 0.00256 AU. MAG is the visual magnitude of the asteroid on the date of closest approach.

 

11-23-08  the sun is blank today

Current conditions

Solar wind
speed: 267.5 km/sec
density: 0.6 protons/cm3
explanation | more data
Updated: Today at 2247 UT

X-ray Solar Flares
6-hr max: A0
2245 UT Nov23
24-hr: A0
2245 UT Nov23
explanation | more data
Updated: Today at: 2245 UT

 

 

A solar wind stream flowing from the indicated coronal hole should reach Earth late on Nov. 25th or Nov. 26th. Credit: Hinode X-ray Telescope

Coronal holes are places in the sun's atmosphere where the magnetic field opens up and allows solar wind to escape. In images taken by X-ray telescopes, such as the one Hinode uses, coronal holes appear dark because the hot glowing gas which would otherwise fill them has spilled out in the solar wind. A stream of gas flowing from this particular hole is heading for Earth. High-latitude sky watchers should be alert for auroras when it arrives on Nov. 25th or 26th.
  11-22-08  The sun is blank today

Current conditions

Solar wind
speed: 284.4 km/sec
density: 3.6 protons/cm3
explanation | more data
Updated: Today at 2246 UT

X-ray Solar Flares
6-hr max: A0
2245 UT Nov22
24-hr: A0
2245 UT Nov22
explanation | more data
Updated: Today at: 2245 UT

 

11-21-08  The sun is blank today

Current conditions

Solar wind
speed: 280.2 km/sec
density: 0.9 protons/cm3
explanation | more data
Updated: Today at 2242 UT

X-ray Solar Flares
6-hr max: A0
2245 UT Nov21
24-hr: A0
2245 UT Nov21
explanation | more data
Updated: Today at: 2245 UT

SASKATCHEWAN FIREBALL: A brilliant green fireball startled onlookers across western Canada on Nov. 20th (5:30 pm MST) when it split the evening sky and fragmented during a series of thunderous explosions. "The sky was lit up almost like daytime for 3 or 4 seconds," reports Gordon Blomgren of Alberta. Murray McDonnell of northwestern Saskatchewan says "my wife and I saw a brilliant flash of blue white light, like lightning. About one minute later a long rumbling sound shook the house."

Andy Bartlett video-recorded the event from a 10th-floor apartment in Edmonton, Alberta:

Click to play the video

A screen capture from an amateur video sent to Global Television Edmonton of a meteor streaking across the southeastern sky in Edmonton last Thursday, just after dusk.

"The brilliant fireball appeared to be closer than the airplane in the upper right corner of this video," says Bartlett. "I made the movie using a Canon A510."

The fireball was almost certainly a small asteroid disintegrating in Earth's atmosphere. A space rock measuring a few to ten meters wide moving at typical local-asteroid velocities would account for the fireball's speed and brightness. Reentry of manmade space junk has now been ruled out. Fragments of the impactor may have reached the ground; if so, they remain undiscovered and/or unreported.

VIDEO UPDATE: A spectacular video of the fireball was recorded by the dashboard camera of a police car on patrol in Edmonton, Alberta. Click to play.

Asteroid in prairie skies weighed approx. 10 tonnes

Researcher ID's region in western Sask. where chunks of space rock could be

TheStarPhoenix.com

Published: Tuesday, November 25, 2008

A University of Calgary investigation of the fireball that lit up the skies of Alberta and Saskatchewan on Thursday has determined that an asteroid fragment weighing approximately 10 tonnes entered the Earth's atmosphere over the prairie provinces.

And U of C researcher Alan Hildebrand has outlined a region in western Saskatchewan where chunks of the desk-sized space rock are expected to be found.

According to a press release, the fireball first appeared approximately 80 kilometres above and just east of the border city of Lloydminster, Alberta/Saskatchewan, and traveled south-southeast towards the Battle River Valley, fragmenting spectacularly in a series of explosions. The fireball penetrated the atmosphere at a steep angle of approximately 60 degrees from the horizontal and lasted about five seconds from 5:26:40 p.m. to 5:26:45 p.m. MST with the largest explosion at 5:26:44 p.m
 

The fireball was recorded on all-sky and security cameras scattered across Saskatchewan and Alberta, in addition to being witnessed by tens of thousands of people who saw it streak across the sky, saw its arc-welding blue flash, or heard the subsequent explosions.

"Firstly, we are enormously appreciative of all the people who have volunteered information about the fireball. The public response to this fireball has been the largest that we have ever had in Canada." said Hildebrand, Canada Research chair in Planetary Science and co-ordinator of the Canadian Fireball Reporting Centre at the University of Calgary.

Hildebrand said the fireball was like a billion-watt lightbulb shining in the sky, turning night into day with a bluish white light. It illuminated the ground for several hundred kilometres in all directions, including as far south as Vauxhall, Alberta.

"Thanks to everyone's help we are now beginning to delineate the trajectory of the fireball, so that its prefall orbit can be determined. We have also outlined an area where its meteorites may have fallen, although we will have more precise predictions to come," Hildebrand added.

11-29-08

Scientists find asteroid debris

Canadian scientists say they have located debris from a 10-ton asteroid that exploded in the skies over Canada's Prairie provinces earlier this month.

Dr. Alan Hildebrand and graduate student Ellen Milley found several fragments late Thursday near the Alberta-Saskatchewan border.

They are searching for what they say could be thousands of fragments strewn over a 20-square-kilometer (seven-square-mile) area near the Battle River.

Residents of Manitoba, Saskatchewan and Alberta were delighted by the huge fireball that lit up the night sky on November 20.

 


 

Solar Wind Rips Up Martian Atmosphere

11.21.2008

Nov. 21, 2008: Researchers have found new evidence that the atmosphere of Mars is being stripped away by solar wind. It's not a gently continuous erosion, but rather a ripping process in which chunks of Martian air detach themselves from the planet and tumble into deep space. This surprising mechanism could help solve a longstanding mystery about the Red Planet.

"It helps explain why Mars has so little air," says David Brain of UC Berkeley, who presented the findings at the 2008 Huntsville Plasma Workshop on October 27th.

Billions of years ago, Mars had a lot more air than it does today. (Note: Martian "air" is primarily carbon dioxide, not the nitrogen-oxygen mix we breathe on Earth.) Ancient martian lake-beds and river channels tell the tale of a planet covered by abundant water and wrapped in an atmosphere thick enough to prevent that water from evaporating into space. Some researchers believe the atmosphere of Mars was once as thick as Earth's. Today, however, all those lakes and rivers are dry and the atmospheric pressure on Mars is only 1% that of Earth at sea-level. A cup of water placed almost anywhere on the Martian surface would quickly and violently boil away—a result of the super-low air pressure.

Above: An artist's concept of ancient Mars with abundant air and water. [Larger image]

So where did the air go? Researchers entertain several possibilities: An asteroid hitting Mars long ago might have blown away a portion of the planet's atmosphere in a single violent upheaval. Or the loss might have been slow and gradual, the result of billions of years of relentless "sand-blasting" by solar wind particles. Or both mechanisms could be at work.


NOTE:  The Chinese recorded watching Venus go past Mars and rip it's atmosphere off - so there is a discrepancy between what science is telling us and what the Chinese reported.

Brain has uncovered a new possibility--a daily ripping process intermediate between the great cataclysm and slow erosion models. The evidence comes from NASA's now-retired Mars Global Surveyor (MGS) spacecraft.

In 1998, MGS discovered that Mars has a very strange magnetic field. Instead of a global bubble, like Earth's, the Martian field is in the form of magnetic umbrellas that sprout out of the ground and reach beyond the top of Mars' atmosphere. These umbrellas number in the dozens and they cover about 40% of the planet’s surface, mainly in the southern hemisphere.

For years, researchers thought the umbrellas protected the Martian atmosphere, shielding pockets of air beneath them from erosion by the solar wind. Surprisingly, Brain finds that the opposite can be true as well: "The umbrellas are where coherent chunks of air are torn away."

Above: Solar wind blowing against Mars tears atmosphere-filled plasmoids from the tops of magnetic umbrellas. Credit: Graphic artist Steve Bartlett. [Larger image]

Addressing his colleagues at the Workshop, he described how he made the discovery just a few months ago:

Brain was scrolling through archival data from Global Surveyor's particles and fields sensors. "We have measurements from 25,000 orbits," he says. During one of those orbits, MGS passed through the top of a magnetic umbrella. Brain noticed that the umbrella's magnetic field had linked up with the magnetic field in the solar wind. Physicists call this "magnetic reconnection." What happened next is not 100% certain, but Global Surveyor's readings are consistent with the following scenario: "The joined fields wrapped themselves around a packet of gas at the top of the Martian atmosphere, forming a magnetic capsule a thousand kilometers wide with ionized air trapped inside," says Brain. "Solar wind pressure caused the capsule to 'pinch off' and it blew away, taking its cargo of air with it." Brain has since found a dozen more examples. The magnetic capsules or "plasmoids" tend to blow over the south pole of Mars, mainly because most of the umbrellas are located in Mars' southern hemisphere.

Above: Dave Brain of UC Berkeley presented this slide at the 2008 Huntsville Plasma Workshop to explain in cartoon fashion how plasmoids carry air away from Mars. [Larger image]

Brain isn't ready to declare the mystery solved. "We're still not sure how often the plasmoids form or how much gas each one contains." The problem is, Mars Global Surveyor wasn't designed to study the phenomenon. The spacecraft was only equipped to sense electrons, not the heavier ions which would make up the bulk of any trapped gas. "Ions and electrons don't always behave the same way," he cautions. Also, MGS sampled the umbrellas at fixed altitudes and at the same local time each day. "We need to sample many altitudes and times of day to truly understand these dynamic events."

In short, he told the audience, "we need more data."

Brain is pinning his hopes on a new NASA mission named MAVEN. Short for "Mars Atmosphere and Volatile Evolution," MAVEN is an upper atmosphere orbiter currently approved for launch to Mars in 2013. The probe is specifically designed to study atmospheric erosion. MAVEN will be able to detect electrons, ions and neutral atoms; it will be able to measure both magnetic and electric fields; it will travel around Mars in an elliptical orbit, piercing magnetic umbrellas at different altitudes, angles, and times of day; and it will explore regions both near and far from the umbrellas, giving researchers the complete picture they need.

If magnetized chunks of air are truly being torn free, MAVEN will see it happening and measure the atmospheric loss rate. "Personally, I think this mechanism is important," says Brain, "but MAVEN may yet prove me wrong."

Meanwhile, the Mystery of the Missing Martian Air is shaping up to be a ripping good yarn

From: http://science.nasa.gov/headlines/y2008/21nov_plasmoids.htm

 

11-20-08  The sun is blank today

Current conditions

Solar wind
speed: 301.4 km/sec
density: 1.3 protons/cm3
explanation | more data
Updated: Today at 2247 UT

X-ray Solar Flares
6-hr max: A0
2245 UT Nov20
24-hr: A0
2245 UT Nov20
explanation | more data
Updated: Today at: 2245 UT

MYSTERIOUS COSMIC RAYS: An international team of researchers has discovered a puzzling surplus of high-energy electrons bombarding Earth from space. The source of these cosmic rays is unknown, but it must be close to the solar system and it could be made of dark matter: full story.

 

11-19-08 -The sun is blank today

Current conditions

Solar wind
speed: 296.5 km/sec
density: 0.2 protons/cm3

explanation | more data
Updated: Today at 2229 UT

X-ray Solar Flares
6-hr max: A0
2245 UT Nov19
24-hr: A0
1605 UT Nov19
explanation | more data
Updated: Today at: 2245 UT

CONVERGING PLANETS: "The anticipation builds as Venus and Jupiter approach each other for their spectacular conjunction with the Moon on December 1st," says astronomy professor Jimmy Westlake of Colorado Mountain College. "In the meantime, the view of the sky's two brightest planets set against the star clouds of the Milky Way isn't half bad, either!"

He took the picture last night from the dark countryside near Stagecoach, Colorado. "Dusk's fading light, wispy clouds, and aircraft headed for parts unknown combined to make a dramatic night scene," he says.

Not everyone has skies so dark and starry. Fortunately, you don't need dark skies to witness the ongoing convergence of Jupiter and Venus. The two bright planets beam through clouds, twilight and even urban light pollution. Step outside at sunset and take a look.Sky maps: Nov.19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, Dec 1.

more images: from Doug Zubenel at Kill Creek Park near De Soto, Kansas; from Tyler Burg of Omaha, Nebraska; from Bill Davis of Albuquerque, New Mexico; from Katy Giorgio of Boston, Massachusetts; from Val Germann of Columbia, Missouri;

 

11-18-08 - The sun is blank today

Current conditions

Solar wind
speed: 330.8 km/sec
density: 0.8 protons/cm3
explanation | more data
Updated: Today at 2246 UT

X-ray Solar Flares
6-hr max: A0
1805 UT Nov18
24-hr: A0
1805 UT Nov18
explanation | more data
Updated: Today at: 2245 UT
 
11-17-08 sunspot 1008 slides over the NE edge of the sun

Current conditions

Solar wind
speed: 382.3 km/sec
density: 1.3 protons/cm3
explanation | more data
Updated: Today at 1835 UT

X-ray Solar Flares
6-hr max: A0
1835 UT Nov17
24-hr: A0
1835 UT Nov17
explanation | more data
Updated: Today at: 1835 UT

LEONID OUTBURST: Just as predicted, the Leonid meteor shower surged during the early hours of Nov. 17th. "Earth passed through a filament of debris shed by parent comet 55P/Tempel-Tuttle in the year 1466," says forecaster Jérémie Vaubaillon of Caltech. The result was a sharp flurry of meteors numbering almost 90 per hour. "In Slovakia, we saw many bright and quick Leonids during the peak," reports Roman Piffl.
 

11-16-08 - sunspot 1008 on the NE edge of the sun

Current conditions

Solar wind
speed: 450.4 km/sec
density: 1.1 protons/cm3
explanation | more data
Updated: Today at 2247 UT

X-ray Solar Flares
6-hr max: A0
2245 UT Nov16
24-hr: A0
0500 UT Nov16
explanation | more data
Updated: Today at: 2245 UT

 

11-15-08  sunspot 1008 is going around the corner toward the back of the sun

Current conditions

Solar wind
speed: 313.0 km/sec
density: 0.5 protons/cm3
explanation | more data
Updated: Today at 0626 UT

X-ray Solar Flares
6-hr max: A0 0625 UT Nov15

24-hr: A0
0625 UT Nov15
explanation | more data
Updated: Today at: 0625 UT

The Solar and Heliospheric Observatory (SOHO) has been doing this trick for years. Every day the spacecraft beams back coronagraph images of our own sun, revealing stars, planets, comets and asteroids that would otherwise be lost in the glare. Today's image captured Mars and Mercury:

The two planets are converging on the Sun and next week, during the days around Thanksgiving in the USA, the trio will gather inside a circle less than three degrees in diameter. Looking up at noon, you'd never

Click here for live images from SOHO.

 

11-14-08 sunspot 1008 on the edge of the sun

Current conditions

Solar wind
speed: 335.0 km/sec
density: 0.4 protons/cm3
explanation | more data
Updated: Today at 2246 UT

X-ray Solar Flares
6-hr max: A0
2245 UT Nov14
24-hr: A0
2245 UT Nov14
explanation | more data
Updated: Today at: 2245 UT

 

11-13-08  sunspot 1008 on the upper NE corner of the sun

Current conditions

Solar wind
speed: 286.3 km/sec
density: 3.9 protons/cm3
explanation | more data
Updated: Today at 2246 UT

X-ray Solar Flares
6-hr max: A0
2245 UT Nov13
24-hr: A2
0645 UT Nov13
explanation | more data
Updated: Today at: 2245 UT

BASKETBALL PLAYER IN THE MOON: It's that time of year, basketball season, and if you don't believe it, just look at tonight's full Moon. Etched in moondust and hardened lava, there's a game in progress:

These images come from P. Edward Murray of Yardley, Pennsylvania: "Last May, I was looking at a National Geographic map of the Moon (left) when suddenly I saw the Basketball Player in the Moon," he says. "Later, I sketched him onto a photo of a full Moon (right) I took using a 4.25-inch Astroscan telescope. My discovery was published in the August 2008 edition of The Lunar Observer, a monthly publication of ALPO. The basketball player can be seen a few days before full Moon and after."

Only one question remains: Which basketball player is it?

LunaBron James, of course.

more images: from Doug Zubenel of De Soto, Kansas; from Becky Ramotowski of Tijeras, New Mexico;

 

11-12-08  sunspot 1008 is growing

Current conditions

Solar wind
speed: 332.1 km/sec
density: 1.9 protons/cm3
explanation | more data
Updated: Today at 2246 UT

X-ray Solar Flares
6-hr max: A0
2230 UT Nov12
24-hr: B1
0010 UT Nov12
explanation | more data
Updated: Today at: 2245 UT

SUNSPOT GROUP 1008: November is a cloudy month in South Wales, so this morning when Steve Wainwright of Swansea saw the sun shining through clear skies, he couldn't resist a smile. When he looked at the sun through his backyard solar telescope, the sun was smiling back:

"The sun is waking up and winking at us today," says Wainwright.

The "smile" is a filament of plasma connecting the two magnetic poles of sunspot 1008. Magnetograms of the active region reveal a N-S polarity characteristic of Solar Cycle 24: this is a new-cycle sunspot. The appearance of 1008 continues a recent trend of increasing new-cycle sunspot counts, which began in Oct. 2008. Solar activity is on the rise; if you have a solar telescope, take a look!

more images: from B. Shelzi and J. Stetson of South Portland, Maine; from Paul Haese of Blackwood, South Australia; from Jan Timmermans of Valkenswaard, the Netherlands; from Pete Lawrence of Selsey, West Sussex, UK; from Peter Paice of Belfast, Northern Ireland; from Andy Yeung of Hong Kong;

 

11-11-08

Current conditions

Solar wind
speed: 342.2 km/sec
density: 2.7 protons/cm3
explanation | more data
Updated: Today at 2246 UT

X-ray Solar Flares
6-hr max: A1
2105 UT Nov11
24-hr: A2
0835 UT Nov11
explanation | more data
Updated: Today at: 2245 UT

SUNSPOT GROUP 1008: A new group of sunspots is growing rapidly in the sun's northern hemisphere. The active region, numbered 1008, contains no fewer than seven dark cores. Pavol Rapavy sends this picture from his backyard observatory in Rimavska Sobota, Slovakia:

Using an H-alpha filter tuned to the red glow of solar hydrogen, Pete Lawrence of Selsey UK witnessed "the formation of a lovely magnetic filament" connecting opposite ends of the sunspot group: photo.

Judging from its high latitude, active region 1008 is a member of new Solar Cycle 24. The appearance of 1008 continues a recent trend of increasing new-cycle sunspot counts, which began in Oct. 2008. Solar activity is on the rise; tf you have a solar telescope, take a look!

more images: from Franck Charlier of Marines, Val d'Oise, France; from David Leong of Hong Kong; from Andy Yeung of Hong Kong; from Peter Paice of Belfast, Northern Ireland; from Denis Joye of Boulogne, France; from Catalin M. Timosca of Turda, Romania;

 

11-10-08 - Sunspot 1008 appeared today

Current conditions

Solar wind
speed: 407.2 km/sec
density: 2.3 protons/cm3
explanation | more data
Updated: Today at 0226 UT

X-ray Solar Flares
6-hr max: B2
2030 UT Nov10
24-hr: B2
2030 UT Nov10
explanation | more data
Updated: Today at: 2355 UT

SOLAR CYCLE UPDATE: "Solar minimum is behind us," declares NASA sunspot forecaster David Hathaway. He bases the assertion on a flurry of new-cycle sunspots in October 2008. For the first time, active regions from new Solar Cycle 24 are outnumbering active regions from old Solar Cycle 23. Solar activity remains generally low, but the sun is showing signs of life.

November is picking up where October left off with the formation of yet another new-cycle sunspot, provisionally numbered 1008. It appeared today at the location circled in this SOHO UV image of the sun:

Inside that bright nest of magnetic loops, a dark sunspot is rapidly coelescing. Howard Eskildsen photographed it from his backyard observatory in Ocala, Florida. Readers, if you have a solar telescope, now is your chance to watch sunspot genesis in action.

more images: from Stephen Ames of Hodgenville, Kentucky; from Adrian Guzman of San Jose, California;

 

11-9-08 sun is blank today

Current conditions

Solar wind
speed: 460.4 km/sec
density: 2.2 protons/cm3
explanation | more data
Updated: Today at 2034 UT

X-ray Solar Flares
6-hr max: A0
2245 UT Nov09
24-hr: A0
1245 UT Nov09
explanation | more data
Updated: Today at: 2245 UT

SUNSET-FLAVORED JELLO: "Every time I go to watch a Pacific sunset I feel like I'm going out on my very first date," says Mila Zinkova of San Francisco, California. "Tonight (Nov. 6th) my date was oh-so entertaining. A green rim and green flashes danced on the top and the sides of the sun for almost a minute as it descended into the Pacific. The green color was as deep as the ocean itself." She captured the scene in a series of photos:

"It reminds me of jello," says atmospheric optics expert Les Cowley. "Near the horizon the sun always sports a slender green rim. Our sphere-shaped atmosphere acts as a lens to lift the sun's image. The blue and green 'suns' are lifted more than the red one, but we rarely see the blue rim because blue light is mostly scattered away to form the sky color above us. The mirage conditions here have distorted the sun and vertically magnified the green rim to generate mini green flashes."

"The California Coast with its cold ocean currents overlaid by warm winds from the land is ideal for seeing sights like these." Sunset jello: another reason to go to the beach!
 
AURORA WATCH: On Nov. 9th, flying photographer Brian Whittaker was 35,000 feet over the Arctic Circle when he looked out the window of his airplane and saw this:

"For several hours I had experienced a good display of dynamic green auroras," says Whittaker. "The best view was when we neared the coast of Greenland. Snow-capped peaks and glaciers were easily visible in the bright moonlight while auroras danced overhead."

It's time to book another flight. On Nov. 24th or 25th, a solar wind stream will hit Earth and probably spark a new round of Northern Lights. High-latitude sky watchers should be alert for auroras.

 

11-8-08  sun has no hotspots today, but solar wind is picking up

Current conditions

Solar wind
speed: 570.3 km/sec
density: 0.9 protons/cm3
explanation | more data
Updated: Today at 2243 UT

X-ray Solar Flares
6-hr max: A0
2245 UT Nov08
24-hr: A0
2245 UT Nov08
explanation | more data
Updated: Today at: 2245 UT

 

11-7-08  Sunspot 1007 sliding around the corner to the back of the sun

Current conditions

Solar wind
speed: 482.1 km/sec
density: 3.7 protons/cm3
explanation | more data
Updated: Today at 2244 UT

X-ray Solar Flares
6-hr max: A1
2245 UT Nov07
24-hr: A1
2245 UT Nov07
explanation | more data
Updated: Today at: 2245 UT

GREAT PROMINENCE: "The sun left two gifts on my doorstep this morning," says Alan Friedman of Buffalo, New York. "There was a gorgeous solar prominence and a glorious warm November day that allowed me to observe it in shirtsleeves!" This was the view through his backyard solar telescope:

Other observers saw it, too: Stephen Ames of Hodgenville, Kentucky, called it "a real WOWser!" Jan Timmermans of the Netherlands measured the prominence and found it surging "four times higher than Earth itself. It was huge." John Boyd of Santa Barbara, California, said "it was the biggest prominence I've seen in a long time. I'm glad the sun is getting active again."

Indeed it is. The month of October brought four new-cycle sunspots, doubling the total of the previous nine months. For the first time in 2008, new-cycle active regions are outnumbering their old-cycle counterparts. Solar Cycle 24 is definitely picking up steam and this fiery prominence may be a further sign of things to come.

Readers, if you have a solar telescope, take a look at the increasingly active sun.

more images: from David Leong of Hong Kong; from Jan Timmermans of Valkenswaard, the Netherlands; from Steve Irvine of Big Bay, Ontario, Canada; from Adrian Guzman of San Jose, California;

 

11-6-08 - sunspot 1007 is going around the corner to the back side of the sun

Current conditions

Solar wind
speed: 296.7 km/sec
density: 14.0 protons/cm3
explanation | more data


24-hr: A9
1135 UT Nov06
explanation | more data
Updated: Today at: 2355 UT

 

11-5-08 - sunspot 1007 heading for the edge of the sun

A solar wind stream flowing from this coronal hole
could reach Earth on Nov. 6th or 7th.
Credit: Hinode X-ray Telescope

Current conditions

Solar wind
speed: 295.6 km/sec
density: 0.2 protons/cm3
explanation | more data
Updated: Today at 2245 UT

X-ray Solar Flares
6-hr max: A0
1650 UT Nov05
24-hr: B3
1255 UT Nov05
explanation | more data
Updated: Today at: 2245 UT
On November 6, 2008 there were 996 potentially hazardous asteroids.
Nov. 2008 Earth-asteroid encounters:
Asteroid
Date(UT)
Miss Distance
Mag.
Size
2008 TX3
Nov. 1
9 LD
19
45 m
2008 UT95
Nov. 2
1.5 LD
17
15 m
2008 UC7
Nov. 2
4.5 LD
20
17 m
4179 Toutatis
Nov. 9
20 LD
14
3.8 km

Notes: LD means "Lunar Distance." 1 LD = 384,401 km, the distance between Earth and the Moon. 1 LD also equals 0.00256 AU. MAG is the visual magnitude of the asteroid on the date of closest approach.

 

11-4-08 sunspot 1007 is heading for the edge today

Current conditions

Solar wind
speed: 325.9 km/sec
density: 0.5 protons/cm3
explanation | more data
Updated: Today at 2246 UT

X-ray Solar Flares
6-hr max: A0
2040 UT Nov04
24-hr: B9
0330 UT Nov04
explanation | more data
Updated: Today at: 2245 UT

 
11-3-08 -  sunspot - 1007

  

SUNSPOT 1007: Over the weekend, sunspot 1007 grew into a substantial active region with two planet-sized cores connected by dark magnetic filaments thousands of kilometers long. The ensemble bears a curious resemblence to the pipe of Sherlock Holmes: "It's filamentary, my dear Watson!" says Alan Friedman who sends this picture from his backyard observatory in Buffalo, New York:

The high latitude and magnetic polarity of sunspot 1007 identify it as a member of new Solar Cycle 24. This is the fourth new-cycle sunspot to breach the sun's surface in the past month. In a year of almost no sunspots, four is significant. It means that the sun is beginning a slow ascent out of solar minimum to a more active phase of the sunspot cycle. Solar minimum is not a permanent condition! Readers, if you have a solar telescope, train it on sunspot 1007 to witness a sign of things to come.

more images: from Larry Alvarez of Flower Mound,