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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: 551.9 km/sec
density: 1.9 protons/cm3
explanation | more data
Updated: Today at 2246 UT
X-ray Solar Flares
6-hr max: A0
2245 UT Sep15
24-hr: A0
2245 UT Sep15
explanation | more data
Updated: Today at: 2245 UT
Daily Sun: 15 Sep 08
The sun is blank--no sunspots. Credit: SOHO/MDI
Sunspot number: 0
What is the sunspot number?
Updated 15 Sept. 2008
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= 3 quiet
24-hr max: Kp= 4
unsettled
explanation | more data
Current Auroral Oval:
Switch to: Europe, USA, New Zealand, Antarctica
Credit: NOAA/POES
What is the auroral oval?
Interplanetary Mag. Field
Btotal: 4.4 nT
Bz: 2.6 nT north
explanation | more data
Updated: Today at 2247 UT
Coronal Holes:
Earth is inside a solar wind stream flowing from the indicated coronal hole. Credit: Hinode X-ray Telescope
SPACE WEATHER
NOAA Forecasts
Updated at: 2008 Sep 15 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: 2008 Sep 15 2201 UTC
Mid-latitudes
0-24 hr
24-48 hr
ACTIVE
20 %
10 %
MINOR
01 %
01 %
SEVERE
01 %
01 %
High latitudes
0-24 hr
24-48 hr
ACTIVE
25 %
10 %
MINOR
05 %
01 %
SEVERE
01 %
01 %
What's up in Space
September 15, 2008
AURORA ALERTS: Did you miss the Northern Lights of August 9th? Next time get a wake-up call from Space Weather PHONE.  

JULES VERNE: Two weeks from now, on Sept 29th, ESA's Jules Verne spacecraft will re-enter Earth's atmosphere and disintegrate as a fireball over the south Pacific Ocean. Until then, the doomed ship is circling Earth in plain view of sky watchers. This movie of Jules Verne gliding by Polaris (the North Star) was recorded on Sept. 10th by Kevin Fetter of Ontario, Canada. People in North America and Europe are favored with plenty of similar passes in the week ahead. Check the Simple Satellite Tracker for viewing times.

more images: from Thomas Dorman of Horizon City,Texas; from John C McConnell of Maghaberry, Northern Ireland.

AURORA WATCH: A solar wind stream is buffeting Earth's magnetic field and causing geomagnetic storms around the Arctic Circle. "The auroras were visible tonight (Sept. 14) in spite of twilight and bright moonlight," says Bjorn Jorgensen, who sends this picture from Tromso, Norway:

Also in Tromso, Martin Ratcliffe reports activity lasting more than two hours "with a five minute period of especially intense curtains dancing across the entire sky."

More storms are in the offing as the solar wind continues to blow. Sky watchers from Alaska to Scandinavia should be alert for auroras.

Sept. 2008 Aurora Gallery
[Aurora Alerts] [Night Sky Cameras]

MOONSET: According to research, Herons are among the most intelligent birds. This one in Seminole, Florida, was smart enough to wake up at dawn to watch the setting of the Harvest Moon:

"We had a clear morning for a change," says photographer David Dickinson. "Walking down to the dock, I started shooting the setting Harvest Moon when I noticed that a Heron was posing on a pylon for me! Together we watched the Moon until sunrise."

The Harvest Moon is the full moon closest to the autumnal equinox (Sept. 22). Before electric lights, farmers relied on Harvest moonlight to help them gather ripening crops late into the night. Now, post-Edison, we appreciate it mainly for its beauty. Browse the photos below for a sampling.

more images: from Lukas Gornisiewicz near Medicine Hat, Alberta, Canada; from Yasmin Angelique Walter of S. Eularia, Ibiza, Baleares, Spain; from Quintus Oostendorp of Vaassen, the Netherlands; from Peter von Bagh of Porvoo, Finland; from P-M Hedén of Hedesunda, Sweden; from Yuichi Takasaka of Lumby, British Columbia, Canada; from Sam Cole of Austin, Texas; from Bob King of Duluth, Minnesota; from Jari Kankaanpaa of Lake Ojutjarvi, Kauhava, Finland;

       
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 15, 2008 , there were 979 potentially hazardous asteroids.
Sept. 2008 Earth-asteroid encounters:
Asteroid
Date(UT)
Miss Distance
Mag.
Size
2003 WT153
Sept. 7
5.8 LD
23
11 m
1996 HW1
Sept. 12
53 LD
12
3.7 km
2003 SW130
Sept. 19
8.6 LD
23
7 m
1998 UO1
Sept. 26
25 LD
18
2.0 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
  a one-stop hub for all things scientific
  more links...
   
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