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SpaceWeather.com -- News and information about meteor showers, solar flares, auroras, and near-Earth asteroids
 
Solar wind
speed: 270.7 km/sec
density: 0.2 protons/cm3
explanation | more data
Updated: Today at 2227 UT
X-ray Solar Flares
6-hr max: C1
2213 UT Sep29
24-hr: C1
2213 UT Sep29
explanation | more data
Updated: Today at: 2259 UT
Daily Sun: 29 Sep 12
Sunspot 1577 poses a slight threat for M-class solar flares. Credit: SDO/HMI
Sunspot number: 77
What is the sunspot number?
Updated 28 Sep 2012

Spotless Days
Current Stretch: 0 days
2012 total: 0 days (0%)
2011 total: 2 days (<1%)
2010 total: 51 days (14%)
2009 total: 260 days (71%)
Since 2004: 821 days
Typical Solar Min: 486 days

Update 28 Sep 2012


The Radio Sun
10.7 cm flux: 133 sfu
explanation | more data
Updated 28 Sep 2012

Current Auroral Oval:
Switch to: Europe, USA, New Zealand, Antarctica
Credit: NOAA/POES
Planetary K-index
Now: Kp= 1 quiet
24-hr max: Kp= 2
quiet
explanation | more data
Interplanetary Mag. Field
Btotal: 2.8 nT
Bz: 1.9 nT south
explanation | more data
Updated: Today at 2347 UT
Coronal Holes: 28 Sep 12
There are no large coronal holes on the Earth side of the sun. Credit: SDO/AIA.
SPACE WEATHER
NOAA Forecasts
Updated at: 2012 Sep 29 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: 2012 Sep 29 2200 UTC
Mid-latitudes
0-24 hr
24-48 hr
ACTIVE
35 %
35 %
MINOR
25 %
30 %
SEVERE
05 %
10 %
High latitudes
0-24 hr
24-48 hr
ACTIVE
10 %
10 %
MINOR
25 %
20 %
SEVERE
60 %
70 %
 
Saturday, Sep. 29, 2012
What's up in space
 

They came from outer space--and you can have one! Genuine meteorites are now on sale in the Space Weather Store.

 
Own your own meteorite

EERIE EARTHSONG: A NASA spacecraft has recorded eerie-sounding radio emissions coming from our own planet. These beautiful "songs of Earth" could, ironically, be responsible for the proliferation of deadly electrons in the Van Allen Belts. [video] [audio]

INCOMING SOLAR STORM CLOUD: Magnetic fields around sunspot 1577 erupted on Sept. 28th, hurling a coronal mass ejection (CME) almost directly toward Earth. The Solar and Heliospheric Observatory (SOHO) recorded the cloud as it raced away from the sun faster than 2.2 million mph:

NOAA forecasters estimate a 50% chance of strong geomagnetic storms around the poles on Sept 30th when the cloud reaches Earth. High-latitude sky watchers should be alert for auroras, which might be intense enough to see in spite of the full moonlight. Aurora alerts: text, voice.

Realtime Aurora Photo Gallery

HARVEST MOON: This weekend's full Moon is the Harvest Moon, the full Moon closest to the autumnal equinox. Before electric lights, farmers working after sunset relied on the light of the Harvest Moon to help them gather ripening autumn crops. Now it's just a pretty sight. Look east for the Harvest moonrise on Saturday night.

Photographer Göran Strand sends this picture of a "Harvest Moon halo" from Frösön, Sweden:

The 22-degree halo was caused by harvest moonlight shining through ice crystals in the high, thin clouds over Frösön. "It was a beautiful halo, very intense," says Strand.

More pictures of the Harvest Moon may be found in the realtime gallery:

Realtime Space Weather Photo Gallery


Realtime Noctilucent Cloud Photo Gallery
[previous years: 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2011]

  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 September 29, 2012 there were potentially hazardous asteroids.
Recent & Upcoming Earth-asteroid encounters:
Asteroid
Date(UT)
Miss Distance
Mag.
Size
2012 SL50
Sep 27
2.8 LD
--
22 m
2012 SY49
Sep 28
2.6 LD
--
29 m
2012 SJ58
Oct 3
5.9 LD
--
23 m
1998 UO1
Oct 4
60.1 LD
--
2.1 km
2005 GQ21
Oct 12
77 LD
--
1.0 km
1998 ST49
Oct 18
28.7 LD
--
1.3 km
1991 VE
Oct 26
34 LD
--
1.1 km
2001 CV26
Oct 30
68 LD
--
2.4 km
2007 PA8
Nov 5
16.8 LD
--
2.4 km
2010 JK1
Nov 25
9.3 LD
--
56 m
2009 LS
Nov 28
55.2 LD
--
1.1 km
2009 BS5
Dec 11
8.4 LD
--
15 m
4179 Toutatis
Dec 12
18 LD
--
2.7 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
Trade Show Displays
   
  more links...
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