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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: 372.3 km/sec
density: 1.3 protons/cm3
explanation | more data
Updated: Today at 2344 UT
X-ray Solar Flares
6-hr max: A3
1905 UT Mar07
24-hr: B2
0440 UT Mar07
explanation | more data
Updated: Today at: 2340 UT
Daily Sun: 07 Mar. 10
A new sunspot is forming in the circled area. It has not yet received an official designation, but if it persists for the rest of the day, it will probably be numbered 1054. Image credit: SOHO/MDI
Sunspot number: 0
What is the sunspot number?
Updated 06 Mar 2010

Spotless Days
Current Stretch: 1 day
2010 total: 3 days (5%)
2009 total: 260 days (71%)
Since 2004: 773 days
Typical Solar Min: 485 days
explanation | more info
Updated 06 Mar 2010


The Radio Sun
10.7 cm flux: 78 sfu
explanation | more data
Updated 06 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= 3
quiet
explanation | more data
Interplanetary Mag. Field
Btotal: 3.4 nT
Bz: 0.1 nT south
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 07 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 Mar 07 2201 UTC
Mid-latitudes
0-24 hr
24-48 hr
ACTIVE
15 %
15 %
MINOR
05 %
05 %
SEVERE
01 %
01 %
High latitudes
0-24 hr
24-48 hr
ACTIVE
20 %
20 %
MINOR
10 %
10 %
SEVERE
01 %
01 %
What's up in Space
March 7, 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.

 

FARSIDE ACTION: Today, the most active part of the sun is not visible from Earth. Sunspot complex 1052-1053 continues to spit CMEs into space from its location behind the sun's western limb. These farside eruptions pose no threat to our planet.

PLANETS AT NOON: Jupiter and Mercury are converging for a remarkable conjunction. On March 7th the two bright planets will be only a little more than 1o apart. It would be a beautiful sight, except for one thing. The event is happening at high noon in close proximity to the blinding sun:

Human eyes cannot see the conjunction, but the Solar and Heliospheric Observtory (SOHO) can. Using a disk to block the glare, SOHO's coronagraph reveals planets, stars and coronal mass ejections (CMEs) in the immediate vicinity of the sun. Today's movie shows Mercury and Jupiter converging as a CME from sunspot complex 1052-1053 billows across the field of view. It's a good show. Join SOHO for a ringside seat.

SOLAR FILAMENTS: Today, amateur astronomers around the world are monitoring a pair of enormous magnetic filaments on the sun. Rogerio Marcon sends this composite image from his backyard observatory in Campinas, Brasil:

The largest of the filaments, which is curling over the sun's northeastern limb, stretches at least 50,000 km from end to end. If it collapses and hits the stellar surface, the impact could produce a powerful Hyder flare. Readers with solar telescopes are encouraged to monitor developments.

more images: from Bavais Joel of Ath, Belgium; from Alan Friedman of downtown Buffalo, NY; from Brian Woosnam of North Wales UK; from Cai-Uso Wohler of Bispingen, Germany; from S. Barube and J. Stetson of S.Portland, Maine; from Greg Piepol of Rockville, Md; from David Gradwell of Ner Birr Ireland;


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 7, 2010 there were 1106 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
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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