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SpaceWeather.com -- News and information about meteor showers, solar flares, auroras, and near-Earth asteroids
SPACE WEATHER
Current conditions
Solar wind
speed: 323.4 km/sec
density: 1.4 protons/cm3
explanation | more data
Updated: Today at 2345 UT
X-ray Solar Flares
6-hr max: B2
2230 UT Jul07
24-hr: B2
2230 UT Jul07
explanation | more data
Updated: Today at: 2340 UT
Daily Sun: 07 Jul 10
Sunspot 1086 is rapidly fading away. Credit: SOHO/MDI
Sunspot number: 23
What is the sunspot number?
Updated 06 July 2010

Spotless Days
Current Stretch: 0 days
2010 total: 35 days (19%)
2009 total: 260 days (71%)
Since 2004: 803 days
Typical Solar Min: 486 days
explanation | more info
Updated 06 July 2010


The Radio Sun
10.7 cm flux: 73 sfu
explanation | more data
Updated 06 July 2010

Current Auroral Oval:
Switch to: Europe, USA, New Zealand, Antarctica
Credit: NOAA/POES
Planetary K-index
Now: Kp= 1 quiet
24-hr max: Kp= 1
quiet
explanation | more data
Interplanetary Mag. Field
Btotal: 2.4 nT
Bz: 0.9 nT south
explanation | more data
Updated: Today at 2346 UT
Coronal Holes:
A solar wind stream flowing from the indicated coronal hole should hit Earth's magnetic field on or about July 11th. Credit: SDO/AIA
SPACE WEATHER
NOAA Forecasts
Updated at: 2010 Jul 07 2201 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: 2010 Jul 07 2201 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
05 %
10 %
MINOR
01 %
01 %
SEVERE
01 %
01 %
What's up in Space
July 7, 2010

ANDROID FLYBYS: Our field-tested satellite tracker is now available for Android phones. Features: Global predictions and flyby alarms! Learn more.

 

SBSS LAUNCH DELAYED: The US Air Force's first Space Based Space Surveillance (SBSS) spacecraft will not launch on July 8th as planned. The Minotaur IV launch vehicle might have a software problem, just identified in a laboratory test of another Minotaur IV. When the SBSS does get off the ground, it will use a large onboard telescope to track space debris and other "potential future threats to the United States' space assets," according to prime contractor Boeing.

A SUNSPOT APPROACHES: For several days, NASA's STEREO-B spacecraft has been monitoring an apparent sunspot on the far side of the sun. Just yesterday, it erupted and hurled a bright coronal mass ejection over the edge of the solar disk (movie). Now, the sunspot itself is approaching:

The Solar and Dynamics Observatory took this extreme ultraviolet picture just hours ago. It shows the spot's magnetic canopy towering over the sun's eastern limb, heralding the appearance of the sunspot's core on July 9th or 10th. After that the active region will turn to face Earth and any further eruptions could be geo-effective. Stay tuned for space weather.

PLUTO AND THE BLACK CLOUD: Pluto has nearly completed its week-long transit across Barnard 92, an inky black cloud of dust in the constellation Sagittarius. Tim Knauer sends this picture from the MacAdam Student Observatory at the University of Kentucky:

"I used our 0.5-meter reflector to take this picture on July 7th," says Knauer. Such a large telescope is not required, however, to see the dwarf planet against the dust cloud's velvety backdrop. Amateur astronomers with 8- to 10-inch optics are having success as well. Browse the images below for more views of Pluto's lonely crossing.

more images: from John G. McClung of San Marcos, Texas; from Dr Paolo Candy of Ci.A.O. Cimini Astronomical Observatory, Italy; from John Chumack of Yellow Springs, Ohio; from Anthony Ayiomamitis of Athens, Greece; from Bob Runyan of Shelton, Nebraska; from Terry Evans of Exmoor, Somerset, UK; from Alfredo Garcia Jr of Chuchupate Campground area, Lockwood Valley, CA; from Jim Tomaka of Alamogordo, NM; from Joao Porto of Azores, Ponta Delgada


Lunar Eclipse Photo Gallery
[Science@NASA: Big Lunar Eclipse] [astronomy alerts]


May 2010 Aurora Gallery
[previous Mays: 2008, 2005, 2004, 2003, 2002] [aurora alerts]

 
       
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 7, 2010 there were 1138 potentially hazardous asteroids.
July-Oct 2010 Earth-asteroid encounters:
Asteroid
Date(UT)
Miss Distance
Mag.
Size
2010 MY1
Jul 3
7.9 LD
24
73 m
1999 JD6
Jul 27
53.9 LD
17
1.8 km
6239 Minos
Aug 10
38.3 LD
18
1.1 km
2005 NZ6
Aug 14
60.5 LD
18
1.3 km
2002 CY46
Sep 2
63.8 LD
16
2.4 km
2010 LY63
Sep 7
51.9 LD
18
1.4 km
2009 SH2
Sep 30
7.1 LD
25
45 m
1998 UO1
Oct 1
32.1 LD
17
2.1 km
2005 GE59
Oct 1
77 LD
18
1.1 km
2001 WN5
Oct 10
41.8 LD
18
1.0 km
1999 VO6
Oct 14
34.3 LD
17
1.8 km
1998 TU3
Oct 17
69.1 LD
15
5.3 km
1998 MQ
Oct 23
77.7 LD
17
2.1 km
2007 RU17
Oct 29
40.6 LD
18
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 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 and Heliospheric Observatory
  Realtime and archival images of the Sun from SOHO.
STEREO
  3D views of the sun from NASA's Solar and Terrestrial Relations Observatory
Daily Sunspot Summaries
  from the NOAA Space Environment Center
Current Solar Images
  from the National Solar Data Analysis Center
Science Central
   
  more links...
   
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