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Solar wind
speed: 499.9 km/sec
density: 1.4 protons/cm3
explanation | more data
Updated: Today at 2346 UT
X-ray Solar Flares
6-hr max: C6
1720 UT Nov11
24-hr: C6
1122 UT Nov11
explanation | more data
Updated: Today at: 2300 UT
Daily Sun: 11 Nov 14
Quiet sunspot AR2205 has a 'beta-gamma-delta' magnetic field that harbors energy for X-class solar flares. Credit: SDO/HMI
Sunspot number: 63
What is the sunspot number?
Updated 11 Nov 2014

Spotless Days
Current Stretch: 0 days
2014 total: 1 day (<1%)
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 11 Nov

The Radio Sun
10.7 cm flux: 132 sfu
explanation | more data
Updated 11 Nov 2014

Current Auroral Oval:
Switch to: Europe, USA, New Zealand, Antarctica
Credit: NOAA/Ovation
Planetary K-index
Now: Kp= 2 quiet
24-hr max: Kp= 3
explanation | more data
Interplanetary Mag. Field
Btotal: 10.5 nT
Bz: 10.1 nT north
explanation | more data
Updated: Today at 2347 UT
Coronal Holes: 10 Nov 14
There are no large coronal holes on the Earthside of the sun. Credit: SDO/AIA. 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: 11-11-2014 09:55:42
NOAA Forecasts
Updated at: 2014 Nov 11 2200 UTC
0-24 hr
24-48 hr
50 %
60 %
10 %
20 %
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 Nov 11 2200 UTC
0-24 hr
24-48 hr
10 %
10 %
01 %
01 %
01 %
01 %
High latitudes
0-24 hr
24-48 hr
15 %
15 %
20 %
20 %
20 %
20 %
Tuesday, Nov. 11, 2014
What's up in space

Would you like a call when things are happening in the night sky? Sign up for backyard astronomy alerts from voice or text.


OLD SUNSPOT SET TO RETURN: The quieting of sunspot AR2205 has prompted NOAA forecasters to lower the odds of an X-class flare today to only 10%. However, they are raising the odds again tomorrow when old sunspot AR2192 is expected to return from its two-week trip around the farside of the sun. In late October, AR2192 unleashed six intense X-flares. If it still possesses any of its former vigor, the old sunspot could bring a sharp uptick in solar activity. NOAA estimates a 30% chance of X-flares on Nov. 12-13. Solar flare alerts: text, voice

HISTORIC COMET LANDING TOMORROW: The European Space Agency is about to make history: On Nov. 12th, it is going to land on a comet. The action begins Wednesday at 08:35 UT when ESA's Rosetta spacecraft drops a probe named "Philae" onto the core of Comet 67P. This video shows what happens next:

In the past, nations of Earth have landed on planets, moons, and asteroids, but never before on a comet. This is an important and daring first. "A comet is unlike any other planetary body that we've attempted to land on," says Claudia Alexander of the US Rosetta Project at JPL. "Getting Philae down successfully will be an incredible achievement for humankind."

"How hard is this landing?" asks Art Chmielewski, the US Rosetta Project Manager. "Consider this: The comet will be moving 40 times faster than a speeding bullet, spinning, shooting out gas and welcoming Rosetta on the surface with boulders, cracks, scarps and possibly meters of dust!"

Philae will take 7 hours to fall 22.5 km from the spacecraft to the comet--an interval some mission scientists are calling "The Seven Hours of Terror." Confirmation of the landing will reach ground stations on Wednesday at approximately 1600 UT. You can follow the descent as it happens by tuning in to ESA's #CometLanding webcast.

Realtime Comet Photo Gallery

GENTLE IMPACT PRODUCES MINOR GEOMAGNETIC STORM: A CME sideswiped Earth's magnetic field on Nov. 10th. The impact was weak, yet nevertheless sparked a G1-class geomagnetic storm and auroras around the poles. Marketa S. Murray sends this picture from outside Fairbanks, Alaska:

"We some 'Alaska rain' in Fairbanks this morning," says Murray. "Beautiful!"

The CME that sparked the display traveled to Earth at about 600 km/s. As CMEs go, that is slow. Because the storm cloud was relatively plodding, it did not develop a shock wave at its leading edge--hence the weak impact and minor storm.

Geomagnetic unrest should continue around the poles for the next 24 hours as CME effects subside. Arctic sky watchers, remain alert for auroras. Aurora alerts: text, voice

Realtime Aurora Photo Gallery

Realtime Space Weather Photo Gallery

Realtime Eclipse 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

On Nov. 11, 2014, the network reported 66 fireballs.
(53 sporadics, 10 Northern Taurids, 2 omicron Eridanids, 1 chi Taurid)

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 November 11, 2014 there were 1511 potentially hazardous asteroids.
Recent & Upcoming Earth-asteroid encounters:
Miss Distance
2014 UD192
Nov 9
3.1 LD
28 m
2004 JN13
Nov 18
52.4 LD
4.1 km
1998 SS49
Nov 18
73.9 LD
3.1 km
2005 UH3
Nov 22
44.4 LD
1.3 km
2007 EJ
Jan 12
68.9 LD
1.1 km
1991 VE
Jan 17
40.6 LD
1.0 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.
  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
  the underlying science of space weather
Space Weather Alerts
  more links...
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