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Solar wind
speed: 645.1 km/sec
density: 2.1 protons/cm3
explanation | more data
Updated: Today at 2347 UT
X-ray Solar Flares
6-hr max: M3
2046 UT Nov15
24-hr: M3
2046 UT Nov15
explanation | more data
Updated: Today at: 2300 UT
Daily Sun: 15 Nov 14
Returning sunspot AR2192, re-numbered AR2209 for its second trip around the sun, has a 'beta-gamma' magnetic field that harbors energy for M-class solar flares. Credit: SDO/HMI
Sunspot number: 117
What is the sunspot number?
Updated 15 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 15 Nov

The Radio Sun
10.7 cm flux: 161 sfu
explanation | more data
Updated 15 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: 6.4 nT
Bz: 5.9 nT south
explanation | more data
Updated: Today at 2347 UT
Coronal Holes: 15 Nov 14
Solar wind flowing from the indicated coronal holes should reach Earth as early as Nov. 17-18. 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: 11-15-2014 10:55:55
NOAA Forecasts
Updated at: 2014 Nov 15 2200 UTC
0-24 hr
24-48 hr
60 %
60 %
20 %
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 15 2200 UTC
0-24 hr
24-48 hr
35 %
30 %
25 %
10 %
05 %
01 %
High latitudes
0-24 hr
24-48 hr
10 %
15 %
25 %
25 %
55 %
40 %
Saturday, Nov. 15, 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.


COMET LANDER FALLS ASLEEP: With its batteries running low and not enough sunlight to recharge them, ESA's Philae lander has gone into 'idle mode.' In this mode, all instruments and most systems on board are shut down. "Prior to falling silent, the lander was able to transmit all science data gathered during the First Science Sequence," says DLR's Stephan Ulamec, Lander Manager, who was in the Main Control Room when the data came in. The reason for this development is that Philae landed on Comet 67P in an unexpected place: the shadow of a tall cliff. From now on, no contact will be possible unless sufficient sunlight falls on the lander's solar panels, generating enough power to wake it up. Stay tuned for updates from ESA.

NORTHERN LIGHTS: NOAA forecasters estimate a 55% chance of polar geomagnetic storms on Nov. 16th when a co-rotating interaction region (CIR) is expected to hit Earth's magnetic field. CIRs are transition zones between fast and slow solar wind streams. Solar wind plasma piles up in these regions, producing density gradients and shock waves that do a good job of sparking auroras. Aurora alerts: text, voice

Last night in Steinsvik, Norway, Tommy Richardsen witnessed a preview of the display to come:

"I was not expecting a strong display on Nov. 14th, but like the waves crashing on the beach, the auroras kept flaring up then calming down only to fire up again," says Richardsen. Monitor the realtime gallery for more lights as the CIR approaches.

Realtime Aurora Photo Gallery

RADS ON A PLANE: On Nov. 11th, Tony Phillips of flew from California across the USA to attend a science communications meeting in Washington DC. As an experiment, he decided to take a radiation sensor onboard the plane. The results were eye-opening. During the apex of his flight to DC, cruising 39,000 feet above the desert between Reno and Phoenix, he recorded a dose rate almost 30 times higher than on the ground below:

There was no solar storm in progress. The extra radiation was just a regular drizzle of cosmic rays reaching down to aviation altitudes. This radiation is ever-present and comes from supernovas, black holes, and other sources across the galaxy.

In a single hour flying between Reno and Phoenix, the passengers on Phillips's flight were exposed to a whole day's worth of ground-level radiation--or about what a person would absorb from an X-ray at the dentist's office. That's not a big deal for an occasional flyer, but as NASA points out, frequent fliers of 100,000 miles or more can accumulate doses equal to 20 chest X-rays or about 100 dental X-rays. Lead aprons, anyone?

The radiation sensor is the same one that Earth to Sky Calculus routinely flies to the stratosphere to measure cosmic rays. It detects X-rays and gamma-rays in the energy range 10 keV to 20 MeV. These energies span the range of medical X-ray machines and airport security scanners. Indeed, when the sensor passed through TSA security at the Reno airport, it began to buzz loudly, signaling a heavy dose of X-rays in the carry-on baggage scanner. TSA agents gathered around the instrument to investigate and they were quite interested when Phillips explained its function. Several wanted to know if they themselves were exposed to radiation in the vicinity of the luggage scanner; a quick survey of the area revealed no leaks.

After boarding the plane, Phillips monitored radiation levels closely. Dose rates tripled within 10 minutes of take-off and remained high for the duration of the flight. This simple experiment shows that space weather can touch us even when the sun is quiet. Imagine what an actual solar storm could do.

Realtime Space Weather Photo Gallery

Realtime Comet 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. 15, 2014, the network reported 25 fireballs.
(16 sporadics, 6 Leonids, 2 Northern Taurids, 1 November omega Orionid)

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 15, 2014 there were potentially hazardous asteroids.
Recent & Upcoming Earth-asteroid encounters:
Miss Distance
2014 UD192
Nov 9
3.1 LD
29 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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