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SpaceWeather.com -- News and information about meteor showers, solar flares, auroras, and near-Earth asteroids
 
Solar wind
speed: 352.9 km/sec
density: 0.5 protons/cm3
explanation | more data
Updated: Today at 2345 UT
X-ray Solar Flares
6-hr max: B3
2036 UT May11
24-hr: B8
0243 UT May11
explanation | more data
Updated: Today at: 2300 UT
Daily Sun: 11 May 11
All of these sunspots are decaying, and solar activity is subsiding again. Credit: SDO/HMI
Sunspot number: 80
What is the sunspot number?
Updated 10 May 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 10 May 2011


The Radio Sun
10.7 cm flux: 98 sfu
explanation | more data
Updated 10 May 2011

Current Auroral Oval:
Switch to: Europe, USA, New Zealand, Antarctica
Credit: NOAA/POES
Planetary K-index
Now: Kp= 1 quiet
24-hr max: Kp= 3
quiet
explanation | more data
Interplanetary Mag. Field
Btotal: 2.6 nT
Bz: 1.5 nT south
explanation | more data
Updated: Today at 2346 UT
Coronal Holes: 11 May 11
There are no large coronal holes on the Earthside of the sun. Credit: SDO/AIA.
SPACE WEATHER
NOAA Forecasts
Updated at: 2011 May 11 2200 UTC
FLARE
0-24 hr
24-48 hr
CLASS M
10 %
10 %
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: 2011 May 11 2200 UTC
Mid-latitudes
0-24 hr
24-48 hr
ACTIVE
35 %
10 %
MINOR
15 %
05 %
SEVERE
05 %
01 %
High latitudes
0-24 hr
24-48 hr
ACTIVE
40 %
15 %
MINOR
20 %
10 %
SEVERE
10 %
01 %
 
Wednesday, May. 11, 2011
What's up in space
 

Are we alone? Your iPhone has the answer. Download the all-new Drake Equation app to calculate the population of the Milky Way.

 
DrakeEQ for iPhone and iPad

SUNDIVING COMET: A comet just discovered by amateur astronomer Sergey Shurpakov is diving past the sun today, and it will probably not survive. Click here to view a movie of the death plunge recorded by the Solar and Heliospheric Observatory--and check back for updates in the hours ahead.

PLANETS AT DAWN: It really was better than coffee. This morning, sky watchers around the world woke up at the crack of dawn to witness a bright conjunction of Venus and Jupiter. Jefferson Teng photographed the planets from the shore of Lampung Bay in Indonesia:

"I had no trouble seeing this rare and beautiful conjunction despite the glaring lights of the Port of Panjang below," says Teng. "Venus and Jupiter were that bright."

Did you oversleep and miss the show? Try again tomorrow morning. The two planets will still be less than 1 degree apart on Thursday, May 12th.

more images: from Tomasz Adam of Kraków, Poland; from Stefano De Rosa of La Morra (Italy); from Paco Bellido of Cordoba, SPAIN; from Wienie van der Oord of the Arava valley, Israel

SUNDOG: Are you Sirius? "No," says John Stetson of Falmouth, Maine. "This puppy's name is Otis; he belongs to my daughter-in-law Amanda who is visiting from North Carolina." On May 9th, Otis blocked the glare so Stetson could photograph this lovely ring around the sun:

"It was a dog day afternoon," says Stetson.

The ring around the sun, visible thanks to Otis, was created by sunlight shining through ice crystals in high cirrus clouds. When the geometry is right, those same ice crystals can create genuine sundogs. Look for them whenever the sky is hazy with cirrus. And if you don't have a puppy to block the glare... well...browse the links below.

puppy alternatives: from Doug Showell of Bellevue, Nebraska; from Brandon Fell of Seattle WA; from Pamela Williams-Gifford of Portland, Oregon; from Alan Atwood of Cedar Rapids, Iowa; from Craig Haugen of Americus, Missouri; from Ivo Dinsbergs of Berzciems, Latvia


April 2011 Aurora Gallery
[previous Aprils: 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 May 11, 2011 there were 1218 potentially hazardous asteroids.
Recent & Upcoming Earth-asteroid encounters:
Asteroid
Date(UT)
Miss Distance
Mag.
Size
2003 YT1
May 5
65.3 LD
--
2.5 km
2011 JV10
May 5
0.9 LD
--
5 m
2011 HC24
May 12
5.9 LD
--
58 m
2002 JC
Jun 1
57.5 LD
--
1.6 km
2009 BD
Jun 2
0.9 LD
--
10 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
2011 GA55
Jul 6
64.1 LD
--
1.0 km
2011 EZ78
Jul 10
37.3 LD
--
1.5 km
2003 YS117
Jul 14
73.9 LD
--
1.0 km
2007 DD
Jul 23
9.3 LD
--
31 m
2009 AV
Aug 22
49.7 LD
--
1.1 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
Conquest Graphics
  for out-of-this-world printing and graphics
Science Central
  cloud server 2
  more links...
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