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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: 344.8 km/sec
density: 2.5 protons/cm3
explanation | more data
Updated: Today at 2346 UT
X-ray Solar Flares
6-hr max: B1
1830 UT Feb24
24-hr: B2
0000 UT Feb24
explanation | more data
Updated: Today at: 2340 UT
Daily Sun: 24 Feb. 10
New sunspot 1050 is anchoring one end of an enormous magnetic filament. Another new sunspot, not yet numbered, is emerging over the sun's northeastern limb. Image credit: SOHO/MDI
Sunspot number: 31
What is the sunspot number?
Updated 23 Feb 2010

Spotless Days
Current Stretch: 0 days
2010 total: 2 days (4%)
2009 total: 260 days (71%)
Since 2004: 772 days
Typical Solar Min: 485 days
explanation | more info
Updated 23 Feb 2010


The Radio Sun
10.7 cm flux: 84 sfu
explanation | more data
Updated 23 Feb 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= 3
quiet
explanation | more data
Interplanetary Mag. Field
Btotal: 3.6 nT
Bz: 0.5 nT south
explanation | more data
Updated: Today at 2347 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 Feb 24 2201 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 Feb 24 2201 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 %
What's up in Space
February 24, 2010

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

 

GREAT FILAMENT, CONTINUED: For the seventh day in a row, an enormous magnetic filament is hanging suspended above the surface of the sun's southern hemisphere. The Solar and Heliospheric Observatory (SOHO) has a great view. How long can it last? Solar filaments are unpredictable. If this one collapses and hits the stellar surface, the impact could produce a powerful Hyder flare. Readers with solar telescopes are encouraged to monitor developments.

MOON HALOES: The Moon is waxing bright and northern clouds are filled with ice. Add these two facts together, and you get a big zero in the sky:

The "zero," or 22o moon halo, is caused by bright moonlight shining through ice crystals in high cirrus clouds. Martin Popek took the picture from Nýdek in the Czech republic on Feb. 22nd when the Moon was only half full. Imagine what this will look like on Feb 28th when the Moon is completely full with more than double the luminosity shown above. Sounds like a photo op! Photographers, ready your cameras, and be alert for moon halos.

more images: from Tyler Allred of Tremonton, Utah; from Lorenzo Comolli of Tradate (VA), Pianura Padana, Italy; from Monika Landy-Gyebnar of Veszprem, Hungary

BEAUTIFUL ENDEAVOUR: Shuttle launches have a reputation for great beauty. The view after a landing isn't bad either. Dr. Mark Staples sends this picture from the runway at Kennedy Space Center just after Endeavour returned to Earth on Sunday night:

"I am part of the medical team of paramedics, decontamination specialists, firemen, nurses and physicians on hand to assist the astronauts and others in case of disaster," says Staples. "We're always glad we are not needed and thank the tremendous shuttle work force and team and crew for a job well done."

Take a look at this shot. "That's a view you only want to see on a runway!" says Staples.

The next shuttle mission to the International Space Station is just around the corner. If all goes according to plan, Discovery will blast off on April 5th at 6:27 am EDT. The pre-dawn launch should be spectacular--and the view from the runway when Discovery returns 13 days later won't be bad either. Stay tuned for coverage.


February Northern Lights Gallery
[previous Februarys: 2009, 2008, 2007, 2006, 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 February 24, 2010 there were 1103 potentially hazardous asteroids.
Feb. 2010 Earth-asteroid encounters:
Asteroid
Date(UT)
Miss Distance
Mag.
Size
2009 UN3
Feb. 9
14.3 LD
12
1.2 km
2010 CK19
Feb. 17
0.9 LD
17
11 m
2001 FD58
Feb. 19
58.5 LD
17
0.9 km
2010 CJ18
Feb. 19
3.3 LD
18
20 m
2002 EZ11
Feb. 24
77.5 LD
18
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 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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