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SpaceWeather.com -- News and information about meteor showers, solar flares, auroras, and near-Earth asteroids
 
Solar wind
speed: 387.8 km/sec
density: 1.1 protons/cm3
explanation | more data
Updated: Today at 2347 UT
X-ray Solar Flares
6-hr max: C1
1836 UT Jul19
24-hr: M7
0558 UT Jul19
explanation | more data
Updated: Today at: 2300 UT
Daily Sun: 19 Jul 12
None of the spots on the Earth-facing side of the sun pose a threat for strong flares. Credit: SDO/HMI
Sunspot number: 59
What is the sunspot number?
Updated 19 Jul 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

Updated 19 Jul 2012


The Radio Sun
10.7 cm flux: 110 sfu
explanation | more data
Updated 19 Jul 2012

Current Auroral Oval:
Switch to: Europe, USA, New Zealand, Antarctica
Credit: NOAA/POES
Planetary K-index
Now: Kp= 2 quiet
24-hr max: Kp= 2
quiet
explanation | more data
Interplanetary Mag. Field
Btotal: 4.6 nT
Bz: 2.2 nT south
explanation | more data
Updated: Today at 2347 UT
Coronal Holes: 18 Jul 12
A solar wind stream flowing from this coronal hole should reach Earth on or about July 21st. Credit: SDO/AIA.
SPACE WEATHER
NOAA Forecasts
Updated at: 2012 Jul 19 2200 UTC
FLARE
0-24 hr
24-48 hr
CLASS M
10 %
01 %
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 Jul 19 2200 UTC
Mid-latitudes
0-24 hr
24-48 hr
ACTIVE
05 %
05 %
MINOR
01 %
01 %
SEVERE
01 %
01 %
High latitudes
0-24 hr
24-48 hr
ACTIVE
15 %
15 %
MINOR
10 %
10 %
SEVERE
05 %
05 %
 
Thursday, Jul. 19, 2012
What's up in space
 

Listen to radar echoes from satellites and meteors, live on listener-supported Space Weather Radio.

 
Spaceweather Radio is on the air

MARTIAN MARATHON: More than 8 years after landing on the Red Planet, Mars rover Opportunity is still running. Indeed, mission planners say the tireless robot is poised to complete a full marathon--the first ever long-distance race on an alien planet. [full story] [video]

ALMOST X-FLARE : Sunspot complex AR1520-1521 erupted again on July 19th, this time producing an M7-class solar flare that almost crossed the threshold into X-territory. NASA's Solar Dynamics Observatory recorded the extreme ultraviolet flash:

The explosion produced a bright coronal mass ejection: movie. The cloud should miss Earth.

Although the explosion occured on the other side of the sun's western limb, our planet could feel some effects. The blast site is magnetically connected to Earth by backward-spiralling lines of magnetic force. Protons accelerated by the flare are being guided to us by those lines of magnetism, and a mild radiation storm is underway. Solar flare alerts: text, voice.

UPDATE: Amateur astronomers with H-alpha telescopes should train their filtered optics on the sun's SW limb. A magnificent row (or "arcade") of magnetic loops is towering over the limb. Magnetic arcades often form in the aftermath of significant explosions such as the one that occured during the early hours of July 19th.

Realtime Space Weather Photo Gallery

SOUTHERN LIGHTS: The geomagnetic storm of July 14-16 was remarkable for the beauty of its auroras in the southern hemisphere. The view was especially good from above:

Astronaut Joe Acaba took the picture from the Interntional Space Station orbiting 400 km above Earth's surface on Saturday, July 14th.

"It was absolutely incredible," says Acaba. "I was working out and in between sets I noticed that we were heading south during a night pass. So I decided my workout could be postponed for a few minutes and I turned out all of the lights in Node 3. Within a couple of minutes, I could not believe what I was seeing. I enjoyed the show for a few minutes [then alerted my crewmates to look].. Even Gennady, with all of his time on orbit, was amazed. Of course I took some obligatory pictures, but then I just sat in the dark, in the peace and quiet of this incredible man made, orbiting laboratory and just looked out the window in awe. What a truly magnificent planet we live on and solar system we live in."

Realtime Aurora 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 July 19, 2012 there were potentially hazardous asteroids.
Recent & Upcoming Earth-asteroid encounters:
Asteroid
Date(UT)
Miss Distance
Mag.
Size
2003 KU2
Jul 15
40.2 LD
--
1.3 km
2004 EW9
Jul 16
46.8 LD
--
2.1 km
2002 AM31
Jul 22
13.7 LD
--
1.0 km
2012 OQ
Jul 24
7.7 LD
--
195 m
37655 Illapa
Aug 12
37 LD
--
1.2 km
2000 ET70
Aug 21
58.5 LD
--
1.1 km
1998 TU3
Aug 25
49.2 LD
--
4.9 km
2009 AV
Aug 26
62.8 LD
--
1.1 km
1998 UO1
Oct 4
60.1 LD
--
2.1 km
2005 GQ21
Oct 12
77 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.
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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