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SpaceWeather.com -- News and information about meteor showers, solar flares, auroras, and near-Earth asteroids
 
Solar wind
speed: 412.1 km/sec
density: 1.4 protons/cm3
explanation | more data
Updated: Today at 2346 UT
X-ray Solar Flares
6-hr max: M1
2126 UT Nov27
24-hr: M1
1557 UT Nov27
explanation | more data
Updated: Today at: 2300 UT
Daily Sun: 27 Nov 12
Fast growing sunspot AR1620 has a beta-gamma magnetic field that harbors energy for M-class solar flares. Credit: SDO/HMI
Sunspot number: 81
What is the sunspot number?
Updated 27 Nov 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 27 Nov 2012


The Radio Sun
10.7 cm flux: 122 sfu
explanation | more data
Updated 27 Nov 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= 1
quiet
explanation | more data
Interplanetary Mag. Field
Btotal: 3.7 nT
Bz: 0.3 nT south
explanation | more data
Updated: Today at 2132 UT
Coronal Holes: 27 Nov 12
Solar wind flowing from the indicated coronal hole should reach Earth on Dec. 1-2. Credit: SDO/AIA.
SPACE WEATHER
NOAA Forecasts
Updated at: 2012 Nov 27 2200 UTC
FLARE
0-24 hr
24-48 hr
CLASS M
35 %
35 %
CLASS X
05 %
05 %
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 Nov 27 2200 UTC
Mid-latitudes
0-24 hr
24-48 hr
ACTIVE
10 %
30 %
MINOR
05 %
10 %
SEVERE
01 %
01 %
High latitudes
0-24 hr
24-48 hr
ACTIVE
15 %
15 %
MINOR
15 %
30 %
SEVERE
15 %
40 %
 
Tuesday, Nov. 27, 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

LAST GASP: Decaying sunspot AR1618 (not to be confused with growing sunspot AR1620) erupted on Nov. 27th (1557 UT), producing a last-gasp solar flare ranking M1.6 on the Richter Scale of Flares. NASA's Solar Dynamics Observatory recorded the extreme ultraviolet flash:

The movie shows a twisted plume of plasma flying away from the blast site, but only temporarily. The sun's gravity pulled the plume back to the stellar surface before it could escape. Extreme UV radiation from this explosion created some ripples of ionization in Earth's atmosphere above North America and Europe. Otherwise, the blast was not geoeffective. Solar flare alerts: text, voice.

BIG SUNSPOT KEEPS GROWING: Sunspot AR1620 doubled in size again yesterday. It is now a behemoth almost 10 times as wide as Earth. A movie from NASA's Solar Dynamics Observatory shows the sunspot materializing over the past 48 hours:

So far the sunspot has been relatively quiet, producing no strong flares. However, the sunspot's magnetic field is rapidly changing as the sunspot grows, and rapidly-changing magnetic fields have a tendency to reconnect and erupt. NOAA forecasters estimate a 35% chance of M-class eruptions in the next 24 hours. Solar flare alerts: text, voice.

Realtime Space Weather Photo Gallery

MORNING CONJUNCTION: As dawn begins on Wednesday morning, look southeast to find Venus and Saturn less than 2° apart in the constellation Virgo. Venus is very bright, Saturn much less so. A small telescope will reveal the rings of Saturn and the gibbous phase of Venus. Sky maps: Nov. 27, Nov. 28

Cole Clark of Big Lake, MN, photographed Venus passing by Saturn on the morning of Nov. 27th:

"Venus and Saturn were less than 1 degree apart," says Cole. "The morning was so beautiful with the nearly full Moon setting, the ISS gliding overhead, and Venus and Saturn in conjunction. It was a moment to live for...."

Realtime Conjunction Photo Gallery


Realtime Aurora Photo Gallery


Realtime Eclipse 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 November 27, 2012 there were 1353 potentially hazardous asteroids.
Recent & Upcoming Earth-asteroid encounters:
Asteroid
Date(UT)
Miss Distance
Size
2012 VN76
Nov 20
7.2 LD
13 m
2010 JK1
Nov 25
9.2 LD
56 m
2009 LS
Nov 28
55.2 LD
1.1 km
2012 WH1
Nov 29
7.6 LD
70 m
2009 BS5
Dec 11
8.4 LD
15 m
4179 Toutatis
Dec 12
18 LD
2.7 km
2003 SD220
Dec 23
59.8 LD
1.8 km
1998 WT24
Dec 23
69.2 LD
1.1 km
2003 UC20
Dec 29
25.7 LD
1.0 km
1999 HA2
Feb 5
58 LD
1.3 km
3752 Camillo
Feb 12
57.5 LD
3.4 km
1999 YK5
Feb 15
49.1 LD
2.1 km
2012 DA14
Feb 15
0.09 LD
57 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 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
Space Weather Alerts
   
  more links...
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