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SpaceWeather.com -- News and information about meteor showers, solar flares, auroras, and near-Earth asteroids
 
Solar wind
speed: 389.6 km/sec
density: 6.1 protons/cm3
explanation | more data
Updated: Today at 2343 UT
X-ray Solar Flares
6-hr max: B1
2300 UT Jul02
24-hr: B1
1121 UT Jul02
explanation | more data
Updated: Today at: 2300 UT
Daily Sun: 02 Jul 11
Sunspot 1243 is growing and could produce a C-class solar flare. Credit: SDO/HMI
Sunspot number: 51
What is the sunspot number?
Updated 01 Jul 2011

Spotless Days
Current Stretch: 0 days
2011 total: 1 day (<1%)
2010 total: 51 days (14%)
2009 total: 260 days (71%)
Since 2004: 820 days
Typical Solar Min: 486 days

Updated 01 Jul 2011


The Radio Sun
10.7 cm flux: 88 sfu
explanation | more data
Updated 01 Jul 2011

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: 6.9 nT
Bz: -0.0 nT
explanation | more data
Updated: Today at 2345 UT
Coronal Holes: 02 Jul 11
A solar wind stream flowing from the indicated coronal hole should reach Earth on July 2nd. Credit: SDO/AIA.
SPACE WEATHER
NOAA Forecasts
Updated at: 2011 Jul 02 2200 UTC
FLARE
0-24 hr
24-48 hr
CLASS M
01 %
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: 2011 Jul 02 2200 UTC
Mid-latitudes
0-24 hr
24-48 hr
ACTIVE
25 %
25 %
MINOR
01 %
01 %
SEVERE
01 %
01 %
High latitudes
0-24 hr
24-48 hr
ACTIVE
30 %
30 %
MINOR
10 %
10 %
SEVERE
05 %
05 %
 
Saturday, Jul. 2, 2011
What's up in space
 

Metallic photos of the sun by renowned photographer Greg Piepol bring together the best of art and science. Buy one or a whole set. They make a stellar gift.

 
Metallic pictures of the Sun

SOUTHERN AURORA WATCH: NOAA forecasters estimate a 35% - 40% chance of mild geomagnetic activity on July 2nd when a solar wind stream is expected to hit Earth's magnetic field. High-latitude sky watchers, particularly those in the winter-dark southern hemisphere, should be alert for auroras.

NLCs INVADE THE USA: Last night, a bank of rippling electric-blue noctilucent clouds spilled across the Canadian border into the lower United States. In doing so, the clouds made their farthest excursion of the year away from the Arctic, their usual environment. "These were the most brilliant NLCs I have ever witnessed!" reports Steven Rosenow, who sends this picture from Washington state:

"I took my camera to a spot along Washington's Hood Canal for a panoramic view," says Rosenow. "It was a visually stunning display that stretched as far as the eye could see." NLC reports are also coming in from Oregon, Montana, North and South Dakota, and Minnesota, and in Europe as far south as France. (Stay tuned for updates.)

Back in the 19th century, these mysterious clouds were confined to polar regions. In recent years, however, NLCs have spread toward the equator, appearing in places such as Utah, Colorado, and perhaps even Virginia. Is this a sign of climate change? Some researchers think so. Sky watchers at all latitudes are encouraged to be alert for electric blue just after sunset or before sunrise; observing tips may be found in the 2011 NLC gallery.

UPDATED: 2011 Noctilucent Cloud Gallery
[previous years: 2003, 2004, 2005, 2006, 2007, 2008, 2009]

REMOTE ECLIPSE SEEN FROM SPACE: Last week, Spaceweather.com offered a whimsical $50 reward to anyone who photographed the partial solar eclipse of July 1st. Visible only from a remote patch of ocean off the coast of Antarctica, the celestial event would likely be seen by no one at all. Nevertheless, the eclipse was photographed. High above Earth, Europe's Proba-2 satellite took this picture of the Moon taking a bite out of the sun:

Launched in November 2009, Proba-2 is a small satellite, about a cubic meter in volume, packed with experimental technologies being tested for future space missions. Proba-2 also contains four sensors for regular monitoring of solar activity. One of the them, the SWAP ultraviolet telescope, recorded the eclipse. This isn't the first time Proba-2 has filmed an eclipse: see also Jan. 15, 2010.

Members of the Proba-2 solar science team at the Royal Observatory of Belgium may collect their $50 prize by emailing the webmaster.

June 2011 Aurora Gallery
[Aurora alerts: text, voice] [previous Junes: 2010, 2008, 2001]


June 15th Lunar Eclipse Gallery

  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 2, 2011 there were 1237 potentially hazardous asteroids.
Recent & Upcoming Earth-asteroid encounters:
Asteroid
Date(UT)
Miss Distance
Mag.
Size
2011 MD
Jun 27
0.05 LD
--
10 m
2011 GA55
Jul 6
64.1 LD
--
1.0 km
2011 EZ78
Jul 10
37.3 LD
--
1.6 km
2003 YS117
Jul 14
73.9 LD
--
1.0 km
2007 DD
Jul 23
9.3 LD
--
31 m
2003 BK47
Jul 26
77.6 LD
--
1.0 km
2009 AV
Aug 22
49.7 LD
--
1.1 km
2003 QC10
Sep 18
50 LD
--
1.2 km
2004 SV55
Sep 19
67.5 LD
--
1.2 km
2007 TD
Sep 23
3.8 LD
--
58 m
2002 AG29
Oct 9
77.1 LD
--
1.0 km
2000 OJ8
Oct 13
49.8 LD
--
2.5 km
2009 TM8
Oct 17
1.1 LD
--
8 m
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
Science Central
 
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