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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: 434.1 km/sec
density: 1.4 protons/cm3
explanation | more data
Updated: Today at 2246 UT
X-ray Solar Flares
6-hr max: A0
2000 UT Jun24
24-hr: A3
1225 UT Jun24
explanation | more data
Updated: Today at: 2245 UT
Daily Sun: 24 June 07
The sun is blank--no sunspots. Credit: SOHO/MDI
Sunspot number: 0
What is the sunspot number?
Updated 23 June 2007
Far side of the Sun:
This holographic image reveals no large sunspots on the farside 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 Jun 24 2124 UT
Interplanetary Mag. Field
Btotal: 3.0 nT
Bz: 1.1 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 June 28th. Credit: SOHO Extreme Ultraviolet Telescope
SPACE WEATHER
NOAA Forecasts
Updated at: 2007 Jun 24 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 Jun 24 2203 UTC
Mid-latitudes
0-24 hr
24-48 hr
ACTIVE
25 %
15 %
MINOR
10 %
05 %
SEVERE
01 %
01 %
High latitudes
0-24 hr
24-48 hr
ACTIVE
30 %
20 %
MINOR
25 %
10 %
SEVERE
05 %
01 %
What's up in Space
June 24, 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.

PLANETS ALIGN: Venus and Saturn are converging for a close encounter on June 30th when the pair will be only 2/3o apart. You can watch the distance shrink in the nights ahead. Step outside after sundown and look west. Venus is the brightest object in the sky; Saturn is the yellow dot right beside it. Sky maps: June 24, 25, 26, 27, 28, 29, 30.

DAYLIGHT FLYBYS: The International Space Station is now bright enough to see in broad daylight. Yesterday in Sonnenbuehl-Genkingen, Germany, photographer Martin Wagner caught it gliding past the quarter Moon:


Photo details: 25cm telescope, f=1300mm, Canon EOS 300D, 1/800s, 200 ASA.

"I saw a light dot coming toward the Moon and took a series of four pictures, hoping that one at least would succeed--and one did! I'm happy to be so lucky," he says.

Would you like a call when the ISS is about to fly over your home town? Sign up for SpaceWeather PHONE.

BONUS: Some flybys are easier to see than others. "We took these photos of the US Navy Blue Angels F/A-18 Hornets passing close to the Moon during yesterday's air show over North Kingstown, Rhode Island," write Imelda Joson and Edwin Aguirre. Photos: #1, #2.

BALL OF FIRE: On June 14th, photographer Mila Zinkova stood on a beach near her home in San Francisco and looked out across the waves. In the distance, a ball of fire emerged from the smokestack of a passing ship:

Really, it was the sun. Green flash and mirage specialist Andrew Young explains: "Thermal turbulence in the ship's exhaust plume is scattering light from the sun into the plume, with a deflection of several minutes of arc." Later, as the sun set even further, the distortion grew, producing a figure that "looked like a solar prominence," says Zinkova. This was caused by the turbulent plume of a second ship beyond the horizon.

It all goes to show, you never know what you might see when you look at the sunset.

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 June 24, 2007 there were 871 potentially hazardous asteroids.
June-July 2007 Earth-asteroid encounters:
Asteroid
Date(UT)
Miss Distance
Mag.
Size
2005 AD13
June 18
33 LD
16
1.2 km
2007 FV42
July 2
53 LD
15
1.2 km
2007 DT103
July 29
9.3 LD
15
550 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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