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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: 375.0 km/sec
density: 34.6 protons/cm3
explanation | more data
Updated: Today at 2246 UT
X-ray Solar Flares
6-hr max: A7
1745 UT Aug14
24-hr: A7
1745 UT Aug14
explanation | more data
Updated: Today at: 2245 UT
Daily Sun: 14 Aug 07
Sunspot 966 has faded away, leaving the sun blank. Credit: SOHO/MDI
Sunspot number: 13
What is the sunspot number?
Updated 13 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= 2
quiet
explanation | more data
Current Auroral Oval:
Switch to: Europe, USA, New Zealand, Antarctica
Credit: NOAA/POES
Updated: 2007 Aug 14 2129 UT
Interplanetary Mag. Field
Btotal: 5.7 nT
Bz: 0.3 nT south
explanation | more data
Updated: Today at 2247 UT
Coronal Holes:
A solar wind stream flowing from the indicated coronal hole should reach Earth on Aug. 15th or 16th. Credit: SOHO Extreme Ultraviolet Telescope
SPACE WEATHER
NOAA Forecasts
Updated at: 2007 Aug 14 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 14 2203 UTC
Mid-latitudes
0-24 hr
24-48 hr
ACTIVE
15 %
25 %
MINOR
05 %
05 %
SEVERE
01 %
01 %
High latitudes
0-24 hr
24-48 hr
ACTIVE
25 %
30 %
MINOR
05 %
10 %
SEVERE
01 %
05 %
What's up in Space
August 14, 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.

SOLAR CONJUNCTION: This week, three planets are gathering around sun: Mercury, Saturn and Venus. Bright sunlight hides the event from human eyes, but SOHO's coronagraph, which blocks the glare, has a great view: today's image. Mercury and Saturn are already "in conjunction"; Venus will join them on Aug. 16th.

POST-PERSEIDS: The Perseid meteor shower is subsiding. According to the International Meteor Organization, the display peaked sharply late on August 12th. The maximum rate was near 100 meteors per hour: data.

Amateur astronomer Chris Peterson recorded this Perseid summary using an all-sky camera in Guffey, Colorado:

"This is a composite image spanning four evenings, August 10th through 13th. It shows 284 meteors, nearly all Perseids," says Peterson.

2007 Perseid Meteor Gallery
Updated Aug. 14, 2007

ARACHNID METEOR SHOWER: This past weekend in San Francisco, Mila Zinkova photographed a very strange meteor cutting through the branches of a tree. It was not a Perseid; it was an Arachnid:

"It's a spider's web," says Zinkova: click here. Sunlight glinting through the silken strand created a pseudo-meteor in the shadows of the tree. "It's been so foggy here in San Francisco lately, this may be the only meteor I see this month!"

Readers, whenever you see a spider web in sunlight, pause to look. Arachnid meteors are just one of the many things you might see.


.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 14, 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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