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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: 404.7 km/sec
density: 1.7 protons/cm3
explanation | more data
Updated: Today at 2255 UT
X-ray Solar Flares
6-hr max: A0
2245 UT Aug12
24-hr: A0
2245 UT Aug12
explanation | more data
Updated: Today at: 2245 UT
Daily Sun: 12 Aug 07
Sunspot 966 is fading away and poses no threat for strong solar flares. Credit: SOHO/MDI
Sunspot number: 13
What is the sunspot number?
Updated 11 Aug 2007
Far side of the Sun:
This holographic image reveals one possible sunspot on the far side of the sun. Image credit: SOHO/MDI
Planetary K-index
Now: Kp= 1 quiet
24-hr max: Kp= 3
quiet
explanation | more data
Current Auroral Oval:
Switch to: Europe, USA, New Zealand, Antarctica
Credit: NOAA/POES
Updated: 2007 Aug 12 2153 UT
Interplanetary Mag. Field
Btotal: 2.8 nT
Bz: 0.5 nT south
explanation | more data
Updated: Today at 2256 UT
Coronal Holes:
A solar wind stream flowing from the indicated coronal hole should reach Earth on or about Aug. 15th. Credit: SOHO Extreme Ultraviolet Telescope
SPACE WEATHER
NOAA Forecasts
Updated at: 2007 Aug 12 2203 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: 2007 Aug 12 2203 UTC
Mid-latitudes
0-24 hr
24-48 hr
ACTIVE
10 %
10 %
MINOR
01 %
01 %
SEVERE
01 %
01 %
High latitudes
0-24 hr
24-48 hr
ACTIVE
15 %
15 %
MINOR
01 %
01 %
SEVERE
01 %
01 %
What's up in Space
August 12, 2007
Where's Saturn? Is that a UFO--or the ISS? What's the name of that star? Get the answers from mySKY--a fun new astronomy helper from Meade.

METEOR NIGHT: The Perseid meteor shower peaks tonight. No matter where you live, the show begins on Sunday, Aug. 12th, around 10 pm local time when the constellation Perseus rises in the northeast. Expect to see a meteor every five minutes. The rate will surge as the night unfolds, increasing to one or two meteors per minute before dawn on Monday, Aug. 13th.

"Here is my first Perseid of the season, and what a nice one it was too," says Pete Lawrence of Selsey, UK, who snapped this picture on August 12th:

"The trail appears slightly curved due to edge distortion in the lens," he adds.

2007 Perseid Meteor Gallery
[observing tips] [sky map]

SPACESHIP SIGHTING: Earlier today, while spacewalking astronauts from shuttle Endeavour added a new truss to the International Space Station (ISS), the two spacecraft flew high over the Netherlands. Ralf Vandebergh was ready with his 10-inch backyard telescope and a digital camera, and he took this picture:

"We clearly see the backside and wings of the shuttle docked to the much larger space station," says Vandebergh. "Here is another image from a slightly different perspective."

The ISS and Endeavour will continue flying over Europe through the next week, making many bright and favorable evening passes. Europeans, get your flyby predictions from Heavens Above.


.2007 Noctilucent Cloud Gallery
[Night-Sky Cameras] ["Noctilucent Cloud"--the song]

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 12, 2007 there were 875 potentially hazardous asteroids.
July 2007 Earth-asteroid encounters:
Asteroid
Date(UT)
Miss Distance
Mag.
Size
2007 FV42
July 2
53 LD
15
1.2 km
2007 MB4
July 4
7.6 LD
16
130 m
2007 DT103
July 29
9.3 LD
15
550 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 Environment Center
  The official U.S. government bureau for real-time monitoring of solar and geophysical events, research in solar-terrestrial physics, and forecasting solar and geophysical disturbances.
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.
Daily Sunspot Summaries
  From the NOAA Space Environment Center
Current Solar Images
  from the National Solar Data Analysis Center
  more links...
©2007, SpaceWeather.com -- This site is penned daily by Dr. Tony Phillips.
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