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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: 398.8 km/sec
density: 0.8 protons/cm3
explanation | more data
Updated: Today at 2346 UT
X-ray Solar Flares
6-hr max: B1
2115 UT Mar05
24-hr: B2
1255 UT Mar05
explanation | more data
Updated: Today at: 2340 UT
Daily Sun: 05 Mar. 10
These three small sunspots pose no threat for strong solar flares. Image credit: SOHO/MDI
Sunspot number: 40
What is the sunspot number?
Updated 04 Mar 2010

Spotless Days
Current Stretch: 0 days
2010 total: 2 days (3%)
2009 total: 260 days (71%)
Since 2004: 772 days
Typical Solar Min: 485 days
explanation | more info
Updated 04 Mar 2010


The Radio Sun
10.7 cm flux: 80 sfu
explanation | more data
Updated 04 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= 1
quiet
explanation | more data
Interplanetary Mag. Field
Btotal: 4.3 nT
Bz: 3.9 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 Mar 05 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 05 2201 UTC
Mid-latitudes
0-24 hr
24-48 hr
ACTIVE
10 %
15 %
MINOR
01 %
01 %
SEVERE
01 %
01 %
High latitudes
0-24 hr
24-48 hr
ACTIVE
15 %
20 %
MINOR
01 %
05 %
SEVERE
01 %
01 %
What's up in Space
March 5, 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.

 

NORTHERN LIGHTS: A solar wind stream is buffeting Earth's magnetic field. High latitude sky watchers should be alert for auroras.

WHAT ARE THE ODDS? Last night in Minburn, Iowa, photographer, Tom Bailey pointed his camera at the Pleiades and opened the shutter. Within 30 seconds, a spaceship bisected the star cluster followed shortly thereafter by a disintegrating clump of comet dust. Unlikely? Here's the photo:


Photo details: Nikon D5000, Nikon 135mm lens, f2.0, 30s

The image was part accident, part design. "I positioned myself at a location where the International Space Station would pass directly in front of the Pleiades," says Bailey. "Right on schedule, I spotted it creeping up over the trees and making a beeline for the cluster. Just as it passed, an unexpected meteor streaked across the field of view. Wow!"

Wow, indeed. Seek out your own crossings using the Simple Satellite Tracker. And don't forget, there's an app for that, too.

more images: from Christopher Calubaquib of El Sobrante, California; from Dan Bush of Evona, Missouri; from Jeff Lebold of Oshawa, Ontario, Canada

TIDAL WAVE! Tsunamis, such as the one spawned by the recent 8.8 magnitude earthquake in Chile, are often mistakenly called "tidal waves." In fact, tides and tsunamis have little in common. One is caused by the gravitational pull of the sun and moon; the other is caused by the rumbling geology of our own planet.

To find a real tidal wave, go to the Severn river in Gloucestershire, UK:

"On March 2nd we experienced a 'five star' tidal bore on the river Severn," reports photographer Jamie Cooper. "It was caused by a large spring tide combined with the funneling effect of the Severn Estuary. There was a carnival atmosphere with hundreds of spectators watching and surfers risking life and limb to ride the wave! News organizations covered the event extensively."

"This is all a result of the sun and moon, of course, so I hope it qualifies as space weather." Indeed, responds the editor, space weather reaches even into the rivers of England. Click here for more images.


UPDATED: 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 5, 2010 there were 1105 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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