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SpaceWeather.com -- News and information about meteor showers, solar flares, auroras, and near-Earth asteroids
 
Solar wind
speed: 389.8 km/sec
density: 0.9 protons/cm3
explanation | more data
Updated: Today at 2347 UT
X-ray Solar Flares
6-hr max: C1
1721 UT Jun29
24-hr: M2
0920 UT Jun29
explanation | more data
Updated: Today at: 2300 UT
Daily Sun: 29 Jun 12
Sunspots 1512 and 1513 pose a threat for M-class solar flares. Credit: SDO/HMI
Sunspot number: 73
What is the sunspot number?
Updated 29 Jun 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 29 Jun 2012


The Radio Sun
10.7 cm flux: 120 sfu
explanation | more data
Updated 29 Jun 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= 2
quiet
explanation | more data
Interplanetary Mag. Field
Btotal: 7.0 nT
Bz: 2.5 nT south
explanation | more data
Updated: Today at 2347 UT
Coronal Holes: 29 Jun 12
Solar wind flowing from this coronal hole should reach Earth on July 2-3. Credit: SDO/AIA.
SPACE WEATHER
NOAA Forecasts
Updated at: 2012 Jun 29 2200 UTC
FLARE
0-24 hr
24-48 hr
CLASS M
40 %
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: 2012 Jun 29 2200 UTC
Mid-latitudes
0-24 hr
24-48 hr
ACTIVE
15 %
25 %
MINOR
05 %
10 %
SEVERE
01 %
01 %
High latitudes
0-24 hr
24-48 hr
ACTIVE
15 %
15 %
MINOR
25 %
30 %
SEVERE
20 %
40 %
 
Friday, Jun. 29, 2012
What's up in space
 

Thirty-five new items have just been added to our Meteorite Jewelry collection. Browse the Space Weather Store for something out of this world.

 
Meteorite jewelry

HIDDEN PORTALS IN EARTH'S MAGNETIC FIELD: A NASA-sponsored researcher at the University of Iowa has developed a way for spacecraft to hunt down hidden magnetic portals in the vicinity of Earth. These gateways link the magnetic field of our planet to that of the sun, setting the stage for stormy space weather. [video]

ACTIVE SUNSPOT: Sunspot AR1513 is crackling with impulsive M-class solar flares. NASA's Solar Dynamics Observatory recorded the extreme ultraviolet flash from one of them at 0920 UT on June 29th:

This M2-class flare (like a similar eruption yesterday) illuminated Earth's upper atmosphere with a pulse of X-rays and extreme ultraviolet radiation. Waves of ionization rippled over Europe, altering the propagation of low-frequency radio signals around the continent. Using a receiver tuned to 60 kHz, Rob Stammes detected the sudden ionospheric disturbance over Norway. His antennas also picked up radio waves from the flare itself at 26 MHz and 56 MHz.

More ionization waves and solar radio bursts are in the offing. NOAA forecasters estimate a 30% chance of continued M-flares during the next 24 hours. Solar flare alerts: text, voice.

Realtime Space Weather Photo Gallery

X THREE MILLION: On the Richter Scale of Solar Flares, X3 is considered to be a big explosion. How about X3 million? NASA's Hubble Space Telescope has seen what happens when a planet gets hit by such a flare. This artist's concept, released today by the space agency, illustrates the impact of an X3000000-class stellar flare on exoplanet HD 189733b:

The flare, detected by NASA's Swift satellite, scorched the top of the planet's atmosphere with a powerful blast of ultraviolet radiation and X-rays. Hours later, Hubble detected more than 1,000 tons of gas every second flying away at 300,000 mph. HD 189733b is a gas giant about 14% more massive than Jupiter, so it hardly misses the atmosphere it lost. Millions of years of these flares, however, will eventually make a dent even in such a massive world. So the next time there's an X-flare here in the solar system, just remember, it could be worse.


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 June 29, 2012 there were potentially hazardous asteroids.
Recent & Upcoming Earth-asteroid encounters:
Asteroid
Date(UT)
Miss Distance
Mag.
Size
2012 MY2
Jun 29
1.3 LD
--
24 m
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
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
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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