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SpaceWeather.com -- News and information about meteor showers, solar flares, auroras, and near-Earth asteroids
SPACE WEATHER
Current conditions
Solar wind
speed: 420.3 km/sec
density: 1.2 protons/cm3
explanation | more data
Updated: Today at 2344 UT
X-ray Solar Flares
6-hr max: C1
2115 UT Mar26
24-hr: C1
2115 UT Mar26
explanation | more data
Updated: Today at: 2340 UT
Daily Sun: 26 Mar. 10
Sunspot 1057 is big but quiet. It does not have the type of twisted magnetic field that harbors energy for strong solar flares. Credit: SOHO/MDI
Sunspot number: 25
What is the sunspot number?
Updated 25 Mar 2010

Spotless Days
Current Stretch: 0 days
2010 total: 6 days (7%)
2009 total: 260 days (71%)
Since 2004: 776 days
Typical Solar Min: 485 days
explanation | more info
Updated 25 Mar 2010


The Radio Sun
10.7 cm flux: 88 sfu
explanation | more data
Updated 25 Mar 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= 2
quiet
explanation | more data
Interplanetary Mag. Field
Btotal: 8.4 nT
Bz: 2.2 nT north
explanation | more data
Updated: Today at 2346 UT
Coronal Holes:
There are no large coronal holes on the Earth-facing side of the sun. Credit: SOHO Extreme UV Telescope
SPACE WEATHER
NOAA Forecasts
Updated at: 2010 Mar 26 2201 UTC
FLARE
0-24 hr
24-48 hr
CLASS M
15 %
15 %
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 Mar 26 2201 UTC
Mid-latitudes
0-24 hr
24-48 hr
ACTIVE
15 %
20 %
MINOR
05 %
10 %
SEVERE
01 %
01 %
High latitudes
0-24 hr
24-48 hr
ACTIVE
20 %
25 %
MINOR
10 %
15 %
SEVERE
01 %
01 %
What's up in Space
March 26, 2010

NEW AND IMPROVED: Turn your iPhone or iPod Touch into a field-tested global satellite tracker. The Satellite Flybys app now works in all countries.

 

AN AVALANCHE OF DARK ASTEROIDS: Every day, a NASA infrared space telescope named "WISE" is discovering dozens to hundreds of previously unknown asteroids. The observatory is making a remarkable contribution to the census of dark space rocks that could potentially threaten Earth: full story.

SUNSPOT CONJUNCTION: Yesterday in Cape Elizabeth, Maine, astrophotographer John Stetson and his son Peter observed a very rare event--a sunspot-space station conjunction:


Photo details: 5-inch AP refractor, Baader solar filter, Luminera 2-0 camera

"We knew when to look thanks to a prediction from CalSky," says Stetson. "The International Space Station transited the solar disk in only 0.62 seconds. We managed to catch the station's silhouette just as it was passing sunspot 1057." Stetson has been photographing solar transits for years; he ranks this one as "the best yet."

As far as we know, this is the first time the ISS has been observed in conjunction with a big sunspot. Next up: How about a sunspot-space station eclipse? It is possible to anticipate such an event because CalSky shows sunspots in their transit prediction graphics. Astrophotographers, check the web site for opportunities.

more images: from Monika Landy-Gyebnar of Veszprem, Hungary; from John Minnerath of Crowheart, Wyoming; from Wouter Verhesen of Sittard, The Netherlands; from Pete Lawrence of Selsey, West Sussex, UK; from Peter Paice of Belfast, Northern Ireland;

FINNMARKSLOPET: You've heard of the Iditarod. But do you know about the Finnmarksløpet? "Finnmarksløpet is the world's northernmost sled dog race and the longest in Europe," explains Kerstin Langenberger of Finnmark, Norway. "It was held this year in mid-March. Every night auroras could be seen - it was awesome!

"Most of the time I was busy helping at the race, but at the Sirma checkpoint I managed to photograph some auroras dancing right above a few of the teams that were having a few hours of well-deserved rest," says Langenberger.

Indeed, March 2010 has been one of the busiest months in years for Arctic Lights. It's a sign that the sun is waking up from a long slumber. For the record, the 1019 km race was won on March 18th by Ralph Johannessen. He and his dogs crossed the finish line in only 5 days, 8 hours and 58 minutes ... under green skies, of course.

March Northern Lights Gallery
[previous Marches: 2009, 2008, 2007, 2006, 2005, 2004, 2003]

 
       
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 March 26, 2010 there were 1110 potentially hazardous asteroids.
March 2010 Earth-asteroid encounters:
Asteroid
Date(UT)
Miss Distance
Mag.
Size
2001 PT9
March 3
11.1 LD
15
305 m
4486 Mithra
March 12
73.5 LD
15
3.3 km
2001 FM129
March 13
44.1 LD
16
1.5 km
2010 FU9
March 18
1.5 LD
17
19 m
2010 EF43
March 18
5.0 LD
19
23 m
2010 FT
March 27
5.5 LD
20
33 m
2002 TE66
March 28
48.0 LD
15
940 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.
Essential 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 and Heliospheric Observatory
  Realtime and archival images of the Sun from SOHO.
STEREO
  3D views of the sun from NASA's Solar and Terrestrial Relations Observatory
Daily Sunspot Summaries
  from the NOAA Space Environment Center
Current Solar Images
  from the National Solar Data Analysis Center
Science Central
   
  more links...
   
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