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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: 358.3 km/sec
density: 2.2 protons/cm3
explanation | more data
Updated: Today at 2344 UT
X-ray Solar Flares
6-hr max: A0
2340 UT Aug29
24-hr: A0
0320 UT Aug29
explanation | more data
Updated: Today at: 2340 UT
Daily Sun: 29 Aug 09
The sun is blank--no sunspots. Photo credit: SOHO/MDI
Sunspot number: 0
What is the sunspot number?
Updated 28 Aug 2009

Spotless Days
Current Stretch: 49 days
2009 total: 191 days (80%)
Since 2004: 702 days
Typical Solar Min: 485 days
explanation | more info
Updated 28 Aug 2009

Far side of the Sun:
This holographic image reveals no sunspots on the far side of the sun. Image credit: SOHO/MDI
Planetary K-index
Now: Kp= 0 quiet
24-hr max: Kp= 1
quiet
explanation | more data
Current Auroral Oval:
Switch to: Europe, USA, New Zealand, Antarctica
Credit: NOAA/POES
Interplanetary Mag. Field
Btotal: 2.8 nT
Bz: 2.1 nT south
explanation | more data
Updated: Today at 2346 UT
Coronal Holes:
A solar wind stream flowing from the indicated coronal hole could reach Earth on August 28th or 29th. Credit: SOHO Extreme UV Telescope
SPACE WEATHER
NOAA Forecasts
Updated at: 2009 Aug 29 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: 2009 Aug 29 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 %
05 %
MINOR
01 %
01 %
SEVERE
01 %
01 %
What's up in Space
August 29, 2009

AURORA ALERT: Did you miss the Northern Lights? In July they descended as far south as Nebraska. Next time get a wake-up call: Spaceweather PHONE.

 

SOLAR PROMINENCE: Amateur astronomers are reporting a large and active prominence dancing along the northeastern limb of the sun. Readers who have solar telescopes are encoluraged to look.

images: from Mark Townley of Brierley Hill, West Midlands, UK; from Stephen Ames of Hodgenville, KY; from Fabio Mariuzza of Biauzzo-Codroipo, Italy; from Cai-Uso Wohler of Bispingen, Germany; from Emiel Veldhuis of Zwolle, the Netherlands

SHUTTLE MISSION BEGINS: Discovery has left the planet. The space shuttle lifted off from Kennedy Space Center one minute before midnight on Friday, Aug. 28th, in a launch that was as flawless as it was beautiful. Pete Lardizabal watched the flight through a 5-inch telescope in St Johns, Florida:

"I caught the shuttle just as it was dropping its spent solid rocket boosters (SRBs)," he says. "This series shows what it looked like before, during, and after the SRBs were shed."

Discovery is now in orbit chasing the International Space Station for a Sunday night rendevous. The shuttle is on a science supply mission. It is carrying high-tech equipment to outfit the station's laboratories. The payload includes new tools for fluid physics research, a -80 degree laboratory freezer, and equipment to study materials such as semiconductors, ceramics, alloys and crystals in low gravity.

The mission marks the start of the transition from assembling the
space station to using it for continuous scientific research.
Until now, assembly and maintenance activities have kept the station's crew almost fully occupied, but as completion of the ISS nears, time is being freed up for science experiments. Soon, the ISS is about to realize its potential as a world-class low gravity research laboratory.

Readers, check the Simple Satellite Tracker for flybys of Discovery and the ISS over your home town!

more images: from Mike Deep of Banana Creek VIP Site, KSC, FL; from Andrew Boyle of Orlando, Florida; from Bobby Lacey of Jekyll Island, Georgia; from Joseph Daly of Cocoa Beach, Florida; from Victor van Wulfen of Space View Park, Titusville, Florida; from Ron Netzley of Palm Bay Florida; from Richard Fleet of Pewsey Vale, Wiltshire, UK; from Jonathan Sabin of Bradenton, Florida; from Jonathan Bingham of Killead Co. Antrim, Northern Ireland; from Martin Wagner of 72820 Sonnenbuehl-Genkingen, Germany; from John C McConnell of Maghaberry, Northern Ireland; from Peter McCabe of Dundalk, Co.Louth, Ireland; from George Anderson of Wokingham, Berkshire, England, UK;

ARCTIC AURORAS: There are some places on Earth where all you have to do to see the Northern Lights is ... to want to. The Inuit village of Salluit in Nunavik, Canada, is such a place. On most clear nights at least a hint of auroras--and often much more than a hint--can be found in the sparkling midnight sky. Salluit resident Sylvain Serre took this picture on August 27th:

"With a clear sky and very good weather, I decided to go outside and take some pictures of the Northern Lights--and there they were," he says.

Salluit is located under Earth's persistent auroral oval, a luminous ring circumscribing the north magnetic pole. Our planet's magnetic field guides particles from space into the oval and voila!--Northern Lights. No geomagnetic storm is required.

August 2009 Aurora Gallery
[previous Augusts: 2008, 2007, 2006, 2005, 2004, 2003, 2002, 2001]


Explore the Sunspot Cycle

       
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 August 29, 2009 there were 1068 potentially hazardous asteroids.
August 2009 Earth-asteroid encounters:
Asteroid
Date(UT)
Miss Distance
Mag.
Size
2009 MC9
Aug. 7
70.3 LD
16
1.2 km
2009 OF
Aug. 8
15.4 LD
18
220 m
2007 RQ17
Aug. 9
8.4 LD
17
130 m
2000 LC16
Aug. 17
75.6 LD
14
2.0 km
2006 SV19
Aug. 21
59.2 LD
16
1.3 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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