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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: 673.3 km/sec
density: 1.5 protons/cm3
explanation | more data
Updated: Today at 2246 UT
X-ray Solar Flares
6-hr max: A1
2135 UT Sep03
24-hr: A9
0105 UT Sep03
explanation | more data
Updated: Today at: 2245 UT
Daily Sun: 03 Sep 07
Tiny sunspot 970 poses no threat for strong solar flares. Credit: SOHO/MDI
Sunspot number: 14
What is the sunspot number?
Updated 02 Sep 2007
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= 2 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 Sep 03 2055 UT
Interplanetary Mag. Field
Btotal: 2.6 nT
Bz: 1.2 nT north
explanation | more data
Updated: Today at 2246 UT
Coronal Holes:
A solar wind stream flowing from the indicated coronal hole should reach Earth on Sept. 5th or 6th. Credit: SOHO Extreme Ultraviolet Telescope
SPACE WEATHER
NOAA Forecasts
Updated at: 2007 Sep 03 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 Sep 03 2203 UTC
Mid-latitudes
0-24 hr
24-48 hr
ACTIVE
15 %
15 %
MINOR
05 %
05 %
SEVERE
01 %
01 %
High latitudes
0-24 hr
24-48 hr
ACTIVE
15 %
15 %
MINOR
05 %
05 %
SEVERE
01 %
01 %
What's up in Space
September 3, 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. .

COSMIC COCKROACHES: A tough, pesky molecule possibly key to the origins of life on Earth has been spotted in deep space surviving the ferocious blastwave of a supernova explosion. Get the full story from Science@NASA.

LUNAR TRANSIT: "I woke up early this morning and packed my gear to record a passage of International Space Station in front of the Moon in the daytime sky," says Alan Friedman of Buffalo, New York. "The window of opportunity was only 1.2 seconds, but I got it!" (continued below)


Click to view a larger movie

"Unfortunately I chose a shutter speed too slow to freeze the motion of the Space Station - it appears as a streaking blur across the Moon - but hey, that's why they call us amateurs!" continues Friedman. "The sunlit ISS appears brighter than the Moon, which quivers in the unsteady atmosphere at 24o above the western horizon. Its path runs through the flooded craters Archimedes and Plato; the brilliant crater at the top is Copernicus."

"Clear skies and happy Labor Day!"

METEOR OUTBURST: Sept. 1, 2007--It was just before dawn and awfully cold in Independence Pass near Aspen, Colorado. Photographer Thomas O'Brien couldn't help falling asleep. Fortunately, his camera kept shooting, recording a beautiful Saturday morning outburst of Aurigid meteors:

"I never saw one myself," he says. Nevertheless, for about 30 minutes around 4:30 PDT (1130 UT) the sky was filled with colorful meteors and fireballs. Sightings have been reported in Arkansas, Arizona, Colorado, California, Idaho, Indiana, Kansas, New Mexico, Ohio, Oregon, Texas and western Canada. Meteor radio echoes were heard as far away as the United Kingdom!

The source of the outburst was ancient Comet Kiess (C/1911 N1), which ~2000 years ago laid down a stream of rocky, dusty debris near Earth's orbit. Earth crossed the stream on Sept. 1st producing the brief but beautiful flurry. (These meteors are called "Aurigids" because they shot out of the constellation Auriga.) Astronomers generally agreed that Earth would cross the stream on Saturday morning, but few expected a major shower. Such an old stream was probably too empty. But Peter Jenniskens of the SETI Institute and colleagues boldly predicted a good display, and they were right.

Aurigid Photo Gallery
Updated Sept. 2, 2007

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 September 3, 2007 there were 880 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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