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Solar wind
speed: 356.1 km/sec
density: 2.1 protons/cm3
explanation | more data
Updated: Today at 2346 UT
X-ray Solar Flares
6-hr max: B9
2153 UT Apr12
24-hr: C5
0727 UT Apr12
explanation | more data
Updated: Today at: 2300 UT
Daily Sun: 12 Apr 14
Northern sunspot AR2032 has a 'beta-gamma' magnetic field that harbors energy for M-class solar flares. So far, however, the sunspot has been quiet. Sunspot AR2035 is more active, producing a steeady stream of C-class solar flares. Credit: SDO/HMI
Sunspot number: 83
What is the sunspot number?
Updated 12 Apr 2014

Spotless Days
Current Stretch: 0 days
2014 total: 0 days (0%)
2013 total: 0 days (0%)
2012 total: 0 days (0%)
2011 total: 2 days (<1%)
2010 total: 51 days (14%)
2009 total: 260 days (71%)

Update
12 Apr 2014

The Radio Sun
10.7 cm flux: 137 sfu
explanation | more data
Updated 12 Apr 2014

Current Auroral Oval:
Switch to: Europe, USA, New Zealand, Antarctica
Credit: NOAA/POES
Planetary K-index
Now: Kp= 3 quiet
24-hr max: Kp= 5
storm
explanation | more data
Interplanetary Mag. Field
Btotal: 8.1 nT
Bz: 7.4 nT south
explanation | more data
Updated: Today at 2347 UT
Coronal Holes: 12 Apr 14
Solar wind flowing from these two coronal holes could reach Earth on April 13-14. Credit: SDO/AIA.

Spaceweather.com posts daily satellite images of noctilucent clouds (NLCs), which hover over Earth's poles at the edge of space. The data come from NASA's AIM spacecraft. The north polar "daisy" pictured below is a composite of near-realtime images from AIM assembled by researchers at the University of Colorado's Laboratory for Atmospheric and Space Physics (LASP).
Noctilucent Clouds
Switch view: Europe, USA, Asia, Polar
Updated at: 02-28-2014 16:55:02
SPACE WEATHER
NOAA Forecasts
Updated at: 2014 Apr 12 2200 UTC
FLARE
0-24 hr
24-48 hr
CLASS M
35 %
40 %
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: 2014 Apr 12 2200 UTC
Mid-latitudes
0-24 hr
24-48 hr
ACTIVE
30 %
25 %
MINOR
10 %
10 %
SEVERE
01 %
01 %
High latitudes
0-24 hr
24-48 hr
ACTIVE
15 %
15 %
MINOR
25 %
25 %
SEVERE
40 %
35 %
 
Saturday, Apr. 12, 2014
What's up in space
 

On April 15th there will be a total eclipse of the Moon. Got clouds? No problem. The event will be broadcast live on the web by the Coca-Cola Science Center.

 
2014 Lunar Eclipse Live

TOTAL LUNAR ECLIPSE: Mark your calendar. On April 15th, there will be a total eclipse of the Moon visible from Australia, New Zealand, and all of the Americas. The action begins on Tuesday at 2 AM Eastern time. Get the full story and a video from Science@NASA.

SUBSIDING STORM: A polar geomagnetic storm that began during the late hours of April 11th is subsiding now. At its peak, the storm registered 5 on the Kp scale of magnetic disturbances, which means it was a relatively minor event. Nevertheless, it was strong enough to spark naked-eye auroras. A family of "aurora addicts" traveling through Boden, Sweden, took this picture of the light:

The storm began on April 11th when the interplanetary magnetic field (IMF) near Earth tipped south, opening a crack in our planet's magnetosphere. Solar wind poured in to fuel the display. Although the storm is subsiding, more auroras are possible on April 12th. NOAA forecasters estimate a 40% chance of renewed geomagnetic storming during the next 24 hours. Aurora alerts: text, voice

Realtime Aurora Photo Gallery

SPACE STATION TRANSITS THE MOON: Three nights ago, astrophotographers Pete Lawrence and Ian Sharp stood in Sharp's back garden in Ham UK waiting for a spaceship to pass in front of the Moon. When it happened, their eyes barely registered the event. High-speed cameras, however, recorded a beautiful view of the ISS speeding over the Sea of Tranquillity:

"Thanks to Pete Lawrence for alerting me to this," says Sharp, who took the picture using a 5-inch refractor. "Pete made the 5 mile trip to setup here and we both imaged the event separately and successfully." [Lawrence's photo]

The ISS transiting the Moon sounds like a rare event, but it happens more often than you might suppose. Only one night earlier, on April 8th, Maximilian Teodorescu of Daia (Giurgiu), Romania, photographed a similar flyby. Most transits go unnoticed because they are so brief. The ISS, moving faster than 17,000 mph, completes its trip across the lunar disk in only a fraction of a second. If you would like to catch the ISS in the act, check Calsky for predicted lunar transits over your home town.

Realtime Space Weather Photo Gallery


Realtime Mars Photo Gallery


Realtime Comet Photo Gallery


  All Sky Fireball Network

Every night, a network of NASA all-sky cameras scans the skies above the United States for meteoritic fireballs. Automated software maintained by NASA's Meteoroid Environment Office calculates their orbits, velocity, penetration depth in Earth's atmosphere and many other characteristics. Daily results are presented here on Spaceweather.com.

On Apr. 11, 2014, the network reported 10 fireballs.
(10 sporadics)

In this diagram of the inner solar system, all of the fireball orbits intersect at a single point--Earth. The orbits are color-coded by velocity, from slow (red) to fast (blue). [Larger image] [movies]

  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 April 12, 2014 there were 1466 potentially hazardous asteroids.
Recent & Upcoming Earth-asteroid encounters:
Asteroid
Date(UT)
Miss Distance
Size
2014 GG45
Apr 9
5 LD
45 m
2014 GQ45
Apr 10
8.2 LD
33 m
2007 TV18
Apr 18
7.4 LD
88 m
2014 GG49
Apr 19
3.9 LD
32 m
2007 HB15
Apr 28
6.7 LD
12 m
2010 JO33
May 17
4 LD
43 m
2005 UK1
May 20
36.7 LD
1.1 km
1997 WS22
May 21
47.1 LD
1.5 km
2002 JC
May 24
48.7 LD
1.4 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
Space Weather Alerts
   
  more links...
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