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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: 589.8 km/sec
density: 1.1 protons/cm3
explanation | more data
Updated: Today at 2245 UT
X-ray Solar Flares
6-hr max: A0
2245 UT Jan20
24-hr: A0
2245 UT Jan20
explanation | more data
Updated: Today at: 2245 UT
Daily Sun: 20 Jan 08
The sun is blank--no sunspots. Credit: SOHO/MDI
Sunspot number: 0
What is the sunspot number?
Updated 19 Jan 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= 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:
What is the auroral oval?
Interplanetary Mag. Field
Btotal: 2.5 nT
Bz: 1 nT south
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 Jan 20 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: 2008 Jan 20 2203 UTC
Mid-latitudes
0-24 hr
24-48 hr
ACTIVE
10 %
10 %
MINOR
05 %
05 %
SEVERE
01 %
01 %
High latitudes
0-24 hr
24-48 hr
ACTIVE
20 %
20 %
MINOR
10 %
10 %
SEVERE
01 %
01 %

What's up in Space
January 20, 2008
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.

PROM ALERT: Readers with solar telescopes, turn your optics toward the southeastern limb of the sun. An active prominence is on display today: photos.

MOON & MARS: Last night's Moon-Mars gathering is breaking up, but it is not too late to see the pair in the same patch of sky. Campfire-red Mars and the silver Moon are beautifully sprawled across the constellations Taurus and Gemini. Look east after sunset for a glittering view: sky map.

AURORA WATCH: The night of Jan. 15th was so cold in Ft Greely, Alaska, that the batteries in Jack Carlson's camera (a Canon 30D) died after 43 minutes. But that was all the time he needed to capture this picture of star trails and a lovely green aurora borealis:

"It was quite cold out," he says--"38 below!"

It's cold again tonight and the auroras are out again as well. A solar wind stream is buffeting Earth's magnetic field, causing high-latitude geomagnetic storms. Photographers in Russian, Scandinavia, Canada and Alaska, keep your batteries warm and keep an eye on the sky!

World Map of Aurora Sightings

BLUE MOON ALERT: This is an alert for Central and South Americans. Colombia's Galeras volcano is spewing ash miles high into the atmosphere, and this could set the stage for a beautiful "Blue Moon." (continued below)

Above: The Galeras volcano, photographed Jan. 17, 2008, by spaceweather reader Alberto Quijano Vodniza using a Canon 20D.

Fine volcanic ash floating in the air has been known to act as a color-filter, transforming ordinary moonlight from silver to blue. It is often said that Blue Moons are mythical or absurd, but they are real, and one may appear over your part of the world this weekend. If you see a Blue Moon, take its picture and submit same to spaceweather.com.


Comet 17P/Holmes Photo Gallery
[World Map of Comet Sightings]
[sky map] [ephemeris] [3D orbit] [comet binoculars]

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. [comment]
On January 20, 2008 there were 921 potentially hazardous asteroids.
Jan. 2008 Earth-asteroid encounters:
Asteroid
Date(UT)
Miss Distance
Mag.
Size
2005 WJ56
Jan. 10
10.9 LD
11
1.2 km
2008 AF3
Jan. 13
1.0 LD
14
27 m
1685 Toro
Jan. 24
76 LD
13
6.2 km
2007 TU24
Jan. 29
1.4 LD
10
400 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 Weather Prediction 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...
©2008, SpaceWeather.com -- This site is penned daily by Dr. Tony Phillips.
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