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SpaceWeather.com -- News and information about meteor showers, solar flares, auroras, and near-Earth asteroids
 
Solar wind
speed: 356.8 km/sec
density: 0.6 protons/cm3
explanation | more data
Updated: Today at 2345 UT
X-ray Solar Flares
6-hr max: B5
1910 UT Mar26
24-hr: C1
0644 UT Mar26
explanation | more data
Updated: Today at: 2300 UT
Daily Sun: 26 Mar 11
Big sunspot 1176 has a beta-gamma magnetic field that harbors energy for M-class solar flares. . Credit: SDO/HMI
Sunspot number: 104
What is the sunspot number?
Updated 25 Mar 2011

Spotless Days
Current Stretch: 0 days
2011 total: 1 day (1%)
2010 total: 51 days (14%)
2009 total: 260 days (71%)
Since 2004: 820 days
Typical Solar Min: 486 days

Updated 25 Mar 2011


The Radio Sun
10.7 cm flux: 113 sfu
explanation | more data
Updated 25 Mar 2011

Current Auroral Oval:
Switch to: Europe, USA, New Zealand, Antarctica
Credit: NOAA/POES
Planetary K-index
Now: Kp= 0 quiet
24-hr max: Kp= 0
quiet
explanation | more data
Interplanetary Mag. Field
Btotal: 4.7 nT
Bz: 2.1 nT north
explanation | more data
Updated: Today at 2347 UT
Coronal Holes: 26 Mar 11
There are no large coronal holes on the Earth-side of the sun. Credit: SDO/AIA.
SPACE WEATHER
NOAA Forecasts
Updated at: 2011 Mar 26 2200 UTC
FLARE
0-24 hr
24-48 hr
CLASS M
50 %
60 %
CLASS X
05 %
05 %
Geomagnetic Storms:
Probabilities for significant disturbances in Earth's magnetic field are given for three activity levels: active, minor storm, severe storm
Updated at: 2011 Mar 26 2200 UTC
Mid-latitudes
0-24 hr
24-48 hr
ACTIVE
10 %
20 %
MINOR
01 %
05 %
SEVERE
01 %
01 %
High latitudes
0-24 hr
24-48 hr
ACTIVE
15 %
25 %
MINOR
01 %
10 %
SEVERE
01 %
01 %
 
Saturday, Mar. 26, 2011
What's up in space
 

Metallic photos of the sun by renowned photographer Greg Piepol bring together the best of art and science. Buy one or a whole set. They make a stellar gift.

 
Metallic pictures of the Sun

NORTHERN LIGHTS VIDEO: Oh to be in Norway! Norwegian photographer Ole C. Salomonsen has sorted through more than 50,000 images of the aurora borealis he took during the past six months and assembled the best ones to create a must-see video entitled Land of the Northern Lights. Click here to watch--and then call your travel agent.

A RAINBOW AT NIGHT: Recipe for a rainbow: Add bright sunlight to raindrops and voila!--a beautiful band of multi-colors arcs across the sky. With such an ingredient list, you might suppose that rainbows can only be seen during the day, yet last night Ethan Tweedie of Kamuela, Hawaii, recorded this spectacular example long after dark:

"It was a moonbow," explains Tweedie. The bright moon played the role of sun, illuminating nightime raindrops falling through the damp Hawaiian air. "I've been trying to photograph a moonbow for a long time. Last night I was driving back from the Volcano there it was!"

Tweedie's long exposure revealed something even more rare: a secondary moonbow. It's the faint 'bow arciing above the brighter primary. Primary rainbows are caused by single reflections inside raindrops; secondary bows are caused by double reflections. It was a night to remember, indeed.

SUNSPOT CONJUNCTION: Scan the image below. One those spots is not on the sun. It's a spaceship:

Amateur astronomers Larry Landolfi and John Stetson of Portland, Maine, took the picture on March 26th. It shows the International Space Station speeding past sunspot group 1176. "The entire transit lasted only 0.65 sec," says Landolfi. "Nevertheless, we managed to catch it on three video frames."

Split-second transits of the ISS are tricky to catch. If you want to try, check Calsky for flyby predictions, and don't forget to buy a good solar filter.


March 2011 Aurora Photo Gallery
[previous Marches: 2010, 2009, 2008, 2007, 2006, 2005, 2004, 2003, 2002]

  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, 2011 there were 1215 potentially hazardous asteroids.
Recent & Upcoming Earth-asteroid encounters:
Asteroid
Date(UT)
Miss Distance
Mag.
Size
2002 DB4
Apr 15
62.5 LD
--
2.2 km
2008 UC202
Apr 27
8.9 LD
--
10 m
2009 UK20
May 2
8.6 LD
--
23 m
2008 FU6
May 5
75.5 LD
--
1.2 km
2003 YT1
May 5
65.3 LD
--
2.5 km
2002 JC
Jun 1
57.5 LD
--
1.6 km
2009 BD
Jun 2
0.9 LD
--
9 m
2002 JB9
Jun 11
71.5 LD
--
3.2 km
2001 VH75
Jun 12
42.2 LD
--
1.1 km
2004 LO2
Jun 15
9.9 LD
--
48 m
2001 QP181
Jul 2
35.1 LD
--
1.1 km
2003 YS117
Jul 14
73.9 LD
--
1.0 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
Conquest Graphics
  for out-of-this-world printing and graphics
Science Central
   
  more links...
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