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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: 545.1 km/sec
density: 2.7 protons/cm3
explanation | more data
Updated: Today at 2345 UT
X-ray Solar Flares
6-hr max: A7
1855 UT Jun28
24-hr: A7
1855 UT Jun28
explanation | more data
Updated: Today at: 2340 UT
Daily Sun: 28 Jun 10
Sunspot 1084 has a simple magnetic field that does not harbor energy for strong solar flares. Credit: SOHO/MDI
Sunspot number: 11
What is the sunspot number?
Updated 27 Jun 2010

Spotless Days
Current Stretch: 0 days
2010 total: 35 days (20%)
2009 total: 260 days (71%)
Since 2004: 803 days
Typical Solar Min: 486 days
explanation | more info
Updated 27 Jun 2010


The Radio Sun
10.7 cm flux: 73 sfu
explanation | more data
Updated 27 Jun 2010

Current Auroral Oval:
Switch to: Europe, USA, New Zealand, Antarctica
Credit: NOAA/POES
Planetary K-index
Now: Kp= 2 quiet
24-hr max: Kp= 3
quiet
explanation | more data
Interplanetary Mag. Field
Btotal: 5.0 nT
Bz: 4.3 nT north
explanation | more data
Updated: Today at 2345 UT
Coronal Holes:
Earth is inside a solar wind stream flowing from the indicated coronal hole. Credit: SDO/AIA
SPACE WEATHER
NOAA Forecasts
Updated at: 2010 Jun 28 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 Jun 28 2201 UTC
Mid-latitudes
0-24 hr
24-48 hr
ACTIVE
10 %
10 %
MINOR
05 %
05 %
SEVERE
01 %
01 %
High latitudes
0-24 hr
24-48 hr
ACTIVE
15 %
15 %
MINOR
10 %
10 %
SEVERE
01 %
01 %
What's up in Space
June 28, 2010

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

 

ISS MARATHON CONTINUES: The ISS continues to orbit Earth in almost constant sunlight, setting the stage for multiple bright flybys in the night sky. Some observers are seeing the space station as often as five times a night! A NASA all-sky meteor camera caught the ISS flying over Georgia on June 27th. "In the last few frames of the movie, the ISS has a close encounter with Jupiter followed quickly thereafter by a flare from Iridium 91," notes Bill Cooke of the Marshall Space Flight Center. "What are the odds of that?" When the ISS appears this often, the improbable becomes a lot more likely. See for yourself.

NOCTILUCENT CLOUDS: Northern Europe is experiencing an outbreak of electric-blue noctilucent clouds--the brightest of the year so far. "The display over Szubin, Poland, on June 27th was amazing," says photographer Marek Nikodem. "Here is a five second second exposure I made using my Nikon D700."

In Vilnius, Lithuania, noctilucent clouds filled half the sky on June 28th. "They were the brightest I've ever seen," reports Aurimas Dirse. "The electric-blue waves were visible all night long."

Some "great NLCs" materialized in Sweden, too, says P-M Hedén. "We especially enjoyed the view before dawn when Jupiter ascended amog the noctilucent clouds--really nice!"

Summer is the season for NLCs, and the recent solstice seems to have kicked these mysterious clouds into high gear. High-latitude sky watchers should be alert for electric blue after sunset.

more images: from Peter Rosén of Stockholm, Sweden; from Krzysztof Chomicki of Bielsk Podlaski, Poland; from Michal Laszczynski of Gdynia, Poland; from Adam Mazurkiewicz of Toruń, Kujawsko-Pomorskie, Polska; from Patryk Koniecki of Kwidzyn, Pomorskie, Poland; from Łukasz Strupiechowski of Halinów, Poland

NEW SUNSPOT 1084: Over the weekend, big new sunspot 1084 rotated into view over the sun's southeastern limb, and it is a nice target for backyard solar telescopes. Amateur astronomer Rogerio Marcon sends this picture from Campinas, Brazil:

The sunspot's dark core is about the size of Earth, and it sits at the vertex of a massive swirl of hot gas. Extreme ultraviolet images from NASA's Solar Dynamics Observatory reveal the million-degree whirlpool. So far the sunspot has been relatively quiet, producing no flares of note, but this could change if the spot's magnetic field becomes unstable. Readers with solar telescopes are encouraged to monitor developments.

more images: from Neo of Netherlands; from Ingmar Glass of Germany, Bavaria, München and Weißenfeld; from Pete Lawrence of Selsey, West Sussex, UK; from Steve Wainwright of Gower South Wales, UK; from Jan Timmermans of Valkenswaard, The Netherlands; from Peter Desypris of Island of Syros Greece; from Didier Favre of Brétigny-sur-Orge, France; from John C McConnell of Maghaberry, Northern Ireland; from Britta Suhre of Rosenheim, Bavaria, Germany;


NEW: 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 June 28, 2010 there were 1138 potentially hazardous asteroids.
June-July 2010 Earth-asteroid encounters:
Asteroid
Date(UT)
Miss Distance
Mag.
Size
2010 JR34
May 14
5.8 LD
21
12 m
2003 HR32
May 17
55.2 LD
17
1.0 km
2010 JN71
May 26
8.2 LD
18
245 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 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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