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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: 426.4 km/sec
density: 1.9 protons/cm3
explanation | more data
Updated: Today at 2245 UT
X-ray Solar Flares
6-hr max: A0
2055 UT Oct05
24-hr: A0
2055 UT Oct05
explanation | more data
Updated: Today at: 2245 UT
Daily Sun: 05 Oct 07
The sun is blank today--no sunspots. Credit: SOHO/MDI
Sunspot number: 0
What is the sunspot number?
Updated 04 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= 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: 1.9 nT
Bz: 1.2 nT north
explanation | more data
Updated: Today at 2245 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 05 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 05 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
20 %
15 %
MINOR
15 %
10 %
SEVERE
05 %
05 %

What's up in Space
October 5, 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. .

WEEKEND PLANETS: Venus, Saturn and the slender crescent Moon are gathering in the morning sky and they'll be beautifully close together all weekend long. Look east at dawn on Saturday and Sunday for a sight guaranteed to wake you up. Sky maps: Oct. 6, Oct. 7.

Oct 5th images: from Günther Strauch of Borken, NRW, Germany; from Helmut Groell of Moers, Germany.

AURORA SUNRISE: On Oct. 3rd in Antarctica, "the fight between day and night couldn't suppress the auroras," says Chantal Steyn who sends this picture from Dronning Maudland (Queen Maud Land):


Photo details: Canon IS3, ISO 100, 15 sec

Steyn is a member of the South African National Antarctic Expedition, currently "wintering over" at a nunatak named Vesleskarvet. But winter is turning to summer: "This might be our last aurora sighting for the season as daylight starts to take over," she says. "This picture was taken at 1:45 AM and the glow of daylight is already visible on the horizon."

Was this really the last display? A solar wind stream will hit Earth on or about Oct. 11th setting up one more battle between auroras and the southern dawn. Stay tuned.

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

RED PLANET: In case you haven't heard, Earth is hurtling toward Mars for a close encounter in December. But why wait? The Red Planet is already a fine target for backyard telescopes in October. This morning in Selsey, UK, amateur astronomer Pete Lawrence took these pictures:

"During my photo session, I noticed that Mars was pretty close to the star cluster M35," notes Lawrence. "A quick check on a chart and I realized I could capture both objects in the same field of view--see the inset on the left."

The surface features seen in Lawrence's high-resolution images aren't painted on or created by computer model--they're real. "Mars is finally starting to show some decent detail for modest backyard telescopes," agrees Joel Warren who recorded this view through his 8-inch backyard 'scope in Amarillo, Texas.

Ready to see for yourself? Mars is shining red and bright in the eastern sky before sunrise. You can't miss it: sky map.

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 5, 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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