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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: 602.1 km/sec
density: 1.1 protons/cm3
explanation | more data
Updated: Today at 2244 UT
X-ray Solar Flares
6-hr max: A0
2245 UT Nov25
24-hr: A3
0600 UT Nov25
explanation | more data
Updated: Today at: 2245 UT
Daily Sun: 25 Nov 07
Sunspot 975 poses no threat for strong solar flares. Credit: SOHO/MDI
Sunspot number: 15
What is the sunspot number?
Updated 25 Nov 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 Nov 25 2137 UT
What is the auroral oval?
Interplanetary Mag. Field
Btotal: 3.9 nT
Bz: 3 nT south
explanation | more data
Updated: Today at 2245 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: 2007 Nov 25 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 Nov 25 2203 UTC
Mid-latitudes
0-24 hr
24-48 hr
ACTIVE
15 %
10 %
MINOR
05 %
01 %
SEVERE
01 %
01 %
High latitudes
0-24 hr
24-48 hr
ACTIVE
20 %
10 %
MINOR
10 %
01 %
SEVERE
05 %
01 %

What's up in Space
November 25, 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.

FLYING MOONDUST: New research by NASA scientists shows that moondust kicked up by the jets of lunar landers can go on a fantastic journey, completely circling the Moon before settling back to the ground. This interesting phenomenon may affect the planning of lunar outposts and other activities as NASA prepares its return to the Moon: full story.

MOON WRITING: What do you do with a glaring light in the night sky? Write! "I wanted to take a special photo of tonight's full Moon," explains Saied Bahrami Nezhad of Kerman, Iran. "I started with a quick flash to expose the trees. Then, with the shutter of my Canon 400D held open, I slowly moved the camera and used the Moon to write 'space weather.'"

"It was hard but enjoyable," he says. A tip for other moonwriters: The entire message took 54 seconds to compose with the camera set at ISO 100. Try it!

more images: from Michel Hersen of Portland, Oregon; from Anthony Arrigo of Park City, Utah; from Claus Vogel of Pangnirtung, Nunavut, Canada; from P-M Hedén of Vallentuna, Sweden; from Eric Walker of Conon Bridge, Highlands, Scotland; from Dave Eagle of Higham Ferrers, Northants. England;

MOON MIRAGE: This weekend, Mila Zinkova saw something disturbing on the western horizon of San Francisco Bay--a fiery mushroom cloud! On closer inspection, it was only the Moon:

"This is a mock mirage of the setting Moon," she explains. A temperature inversion created a dim, inverted image of the Moon, which rose up to meet the real Moon as it set. Together, the two moons combined to make a "mushroom cloud." Sometimes mock mirages like this one end with a beautiful green flash, but on this evening "the horizon was not clear enough to see the green," she says.

A note to California photographers: Cool offshore currents combined with warm Santa Ana winds are creating conditions favorable for mirages. This is a good week to go to the beach and watch the Sun and Moon set.


Comet 17P/Holmes Photo Gallery
[Interactive World Map of Comet Photos]
[sky map] [ephemeris] [3D orbit] [Night Sky Cameras]

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 November 25, 2007 there were 907 potentially hazardous asteroids.
Nov. 2007 Earth-asteroid encounters:
Asteroid
Date(UT)
Miss Distance
Mag.
Size
2005 GL
Nov. 8
8.0 LD
16
280 m
2007 VA3
Nov. 11
7.0 LD
19
30 m
2007 UL12
Nov. 12
18.4 LD
17
325 m
1989 UR
Nov. 24
27.6 LD
15
880 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...
©2007, SpaceWeather.com -- This site is penned daily by Dr. Tony Phillips.
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