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SpaceWeather.com -- News and information about meteor showers, solar flares, auroras, and near-Earth asteroids
 
Solar wind
speed: 286.4 km/sec
density: 6.2 protons/cm3
explanation | more data
Updated: Today at 2347 UT
X-ray Solar Flares
6-hr max: B2
2015 UT Dec03
24-hr: B5
0658 UT Dec03
explanation | more data
Updated: Today at: 2300 UT
Daily Sun: 03 Dec 10
New sunspot 1131 is big but (so far) quiet. Credit: SDO/HMI. 2-day movie: 9 MB mpg
Sunspot number: 32
What is the sunspot number?
Updated 02 Dec 2010

Spotless Days
Current Stretch: 0 days
2010 total: 45 days (13%)
2009 total: 260 days (71%)
Since 2004: 813 days
Typical Solar Min: 486 days

Updated 02 Dec 2010


The Radio Sun
10.7 cm flux: 87 sfu
explanation | more data
Updated 02 Dec 2010

Current Auroral Oval:
Switch to: Europe, USA, New Zealand, Antarctica
Credit: NOAA/POES
Planetary K-index
Now: Kp= 0 quiet
24-hr max: Kp= 1
quiet
explanation | more data
Interplanetary Mag. Field
Btotal: 2.6 nT
Bz: 0.9 nT north
explanation | more data
Updated: Today at 2120 UT
Coronal Holes: 03 Dec 10
There are no large coronal holes on the Earth-facing side of the sun. Credit: SDO/AIA.
SPACE WEATHER
NOAA Forecasts
Updated at: 2010 Dec 03 2200 UTC
FLARE
0-24 hr
24-48 hr
CLASS M
01 %
01 %
CLASS X
01 %
01 %
Geomagnetic Storms:
Probabilities for significant disturbances in Earth's magnetic field are given for three activity levels: active, minor storm, severe storm
Updated at: 2010 Dec 03 2200 UTC
Mid-latitudes
0-24 hr
24-48 hr
ACTIVE
05 %
05 %
MINOR
01 %
01 %
SEVERE
01 %
01 %
High latitudes
0-24 hr
24-48 hr
ACTIVE
05 %
05 %
MINOR
01 %
01 %
SEVERE
01 %
01 %
 
Friday, Dec. 3, 2010
What's up in space
 

iPHONE VS ANDROID! Actually, it doesn't matter which phone you carry. Our cool, new app turns both smartphones into field-tested satellite trackers. Learn more.

 

"ARSENIC-BUG" RE-DEFINES LIFE: Biology textbooks beware. A microbe in California's Mono Lake is challenging long-held ideas about the basic chemistry of life. The GFAJ-1 strain of Gammaproteobacteria uses toxic arsenic as a key building block of its DNA, causing astrobiologists to re-think the possibilities for life on and off our planet. Get the full story from Science@NASA.

MAGNETIC FILAMENT: A magnetic filament more than 400,000 km long is snaking around the sun's southeastern limb. NASA's Solar Dynamics Observatory photographed it rotating into view during the early hours of Dec. 3rd:

This comes as no surprise. NASA's STEREO-B spacecraft has been monitoring the filament for days as it approached the sun's horizon from behind. So far the massive structure has hovered quietly above the stellar surface, showing no signs of instability. How long can the quiet last? Long filaments like this one have been known to collapse with explosive results when they hit the star below. Stay tuned for developments.

RADIO STORM ON JUPITER: Astronomers have long known that Jupiter is a source of powerful shortwave radio bursts. "Last Sunday afternoon (Nov. 28) I received an alert from radio astronomer Wes Greenman in Florida that Jupiter was storming strongly," reports Thomas Ashcraft of New Mexico. "Although it was 4 pm and the sun was still up, I swung my radio antenna towards Jupiter and tuned right into a crashing storm." Click on the image below to hear the alien sounds that emerged from the loudspeaker of Ashcraft's 21 MHz radio telescope:

Radio signals from Jupiter are not a sign of extraterrestrial intelligence. They occur naturally, caused by plasma instabilities in Jupiter's magnetosphere and fueled by powerful electric currents that flow between Jupiter and the volcanic moon Io. These radio bursts are so powerful, they can be picked up with simple antennas and receivers. Indeed, shortwave listeners often detect Jupiter by accident and don't even realize the origin of the crashing sounds they are hearing!

Readers, would you like to tune into Jupiter? NASA's RadioJOVE program will help you build a radio telescope and start recording alien signals of your own.


November 2010 Aurora Gallery
[previous Novembers: 2009, 2008, 2007, 2006, 2004, 2003, 2002, 2001, 2000]

  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 3, 2010 there were 1164 potentially hazardous asteroids.
Recent & Upcoming Earth-asteroid encounters:
Asteroid
Date(UT)
Miss Distance
Mag.
Size
2010 TQ19
Oct 8
9.6 LD
18
37 m
2010 TS19
Oct 10
3.7 LD
18
31 m
2010 TD54
Oct 12
0.1 LD
14
7 m
2010 TB54
Oct 13
6.1 LD
20
19 m
1999 VO6
Oct 14
34.3 LD
16
1.8 km
2010 TK
Oct 16
4.5 LD
18
37 m
1998 TU3
Oct 17
69.1 LD
13
5.2 km
2010 TG19
Oct 22
1.1 LD
15
70 m
1998 MQ
Oct 23
77.7 LD
15
1.9 km
2007 RU17
Oct 29
39.2 LD
15
1.1 km
2003 UV11
Oct 30
5 LD
12
595 m
3838 Epona
Nov 7
76.8 LD
14
3.4 km
2005 QY151
Nov 16
77.7 LD
17
1.3 km
2008 KT
Nov 23
5.6 LD
21
10 m
2002 EZ16
Nov 30
73.9 LD
16
1.0 km
2000 JH5
Dec 7
47 LD
-
1.5 km
2010 JL33
Dec 9
16.6 LD
13
1.3 km
2008 EA32
Jan 7
76.5 LD
-
2.1 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.
  Essential web links
NOAA Space Weather Prediction Center
  The official U.S. government space weather bureau
Atmospheric Optics
  The first place to look for information about sundogs, pillars, rainbows and related phenomena.
Solar Dynamics Observatory
  Researchers call it a "Hubble for the sun." SDO is the most advanced solar observatory ever.
STEREO
  3D views of the sun from NASA's Solar and Terrestrial Relations Observatory
Solar and Heliospheric Observatory
  Realtime and archival images of the Sun from SOHO.
Daily Sunspot Summaries
  from the NOAA Space Environment Center
Heliophysics
  the underlying science of space weather
Science Central
   
  more links...
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