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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: 321.5 km/sec
density: 2.1 protons/cm3
explanation | more data
Updated: Today at 2245 UT
X-ray Solar Flares
6-hr max: A0
2245 UT Oct07
24-hr: A0
0720 UT Oct07
explanation | more data
Updated: Today at: 2245 UT
Daily Sun: 07 Oct 07
Sunspot 972 poses no threat for strong solar flares. Credit: SOHO/MDI
Sunspot number: 15
What is the sunspot number?
Updated 05 Oct 2007
Far side of the Sun:
This holographic image reveals no large sunspots 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 Oct 07 2143 UT
What is the auroral oval?
Interplanetary Mag. Field
Btotal: 3.1 nT
Bz: 0.2 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 or about Oct. 11th. Credit: Hinode X-tray Telescope
SPACE WEATHER
NOAA Forecasts
Updated at: 2007 Oct 07 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 Oct 07 2203 UTC
Mid-latitudes
0-24 hr
24-48 hr
ACTIVE
05 %
05 %
MINOR
01 %
01 %
SEVERE
01 %
01 %
High latitudes
0-24 hr
24-48 hr
ACTIVE
10 %
10 %
MINOR
01 %
01 %
SEVERE
01 %
01 %

What's up in Space
October 7, 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. .

POLES APART: Something odd is happening to sunspot 972: its north and south magnetic poles are racing apart: movie. Often the spreading of magnetic poles signals the end of a sunspot. Could this active region dissolve less than 48 hours after it surfaced? You are now experiencing solar minimum.

GOOD MORNING: This morning in Tehran, Iran, photographer Babak A. Tafreshi awoke to a scene of rare beauty. "The crescent Moon, dazzling Venus, Regulus and Saturn were gathered together in the deep blue early morning sky," he says. Golden autumn leaves added an extra dash of color:


Photo details: Canon 20D, 400 ASA. More images: #1, #2, #3.

As daybreak progressed from the Middle East to Europe to the Americas, the Moon moved down through the Venus-Regulus-Saturn triangle. Browse the images below to see the geometry evolve.

more images: from Gábor Szendrői of Gencsapáti, Hungary; from Dirk Peeters of Lille, Belgium; from Peter Heinzen of Moosalp, Switzerland; from Olivier Staiger near Geneva, Switzerland; from Mariano Ribas of Buenos Aires, Argentina; from Bob Betenia of Calgary, Alberta Canada; from Alberto Levy of Cabo San Lucas, Mexico; from Mark A. Brown of North of Carlisle, Pennsylvania; from Mark Wloch of Southgate, Michigan; from Leon Choin of Wonder Lake, Illinois; from Terry Mann of West Manchester, Ohio; from Darrell Spangler of Drake, Colorado.

TIE FIGHTER: Lately, observers have been saying the International Space Station reminds them of a TIE Fighter. Here's why:

Amateur astronomer Chris Todd of Ocean, New Jersey, took the picture last night through his hand-guided 8-inch Meade LX90. "It was an amazing space station flyover!" he says.

The "wings" in Todd's picture are the station's copper-colored solar arrays, one of them newly unfurled giving the station a symmetrical fighter-like outline. Truly, however, there is no comparison: While a cramped Star Wars TIE Fighter could barely hold one Darth Vader, the International Space Station is large enough to house 3+ astronauts with room to spare for a science lab, a kitchen, a miniature gymnasium and more. It all adds up to a spaceship as bright as Venus.

Later this month space shuttle Discovery will join ISS in Earth orbit. For one or two nights, as the shuttle prepares to dock with the larger space station, it will be possible to see and photograph the spacecraft side-by-side. When should you look? Check Heavens Above for flyby timetables or sign up for SpaceWeather PHONE to receive can't-miss alerts by phone and email.


September 2007 Aurora Gallery
[August 2007 Aurora Gallery] [Aurora Alerts]

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 October 7, 2007 there were 888 potentially hazardous asteroids.
Sept. 2007 Earth-asteroid encounters:
Asteroid
Date(UT)
Miss Distance
Mag.
Size
2007 RF1
Sep. 2
8.5 LD
18
26 m
2007 RS1
Sep. 5
0.2 LD
17
3 m
2007 RJ1
Sep. 16
2.5 LD
16
40 m
2007 RC20
Sep. 20
5.1 LD
19
22 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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