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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: 474.6 km/sec
density: 2.0 protons/cm3
explanation | more data
Updated: Today at 2245 UT
X-ray Solar Flares
6-hr max: A0
2245 UT Jun18
24-hr: A0
0815 UT Jun18
explanation | more data
Updated: Today at: 2245 UT
Daily Sun: 18 June 07
The sun is blank--no sunspots. Credit: SOHO/MDI
Sunspot number: 0
What is the sunspot number?
Updated 17 June 2007
Far side of the Sun:
This holographic image reveals one or two small spots on the farside of the sun. Image credit: SOHO/MDI
Planetary K-index
Now: Kp= 2 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 Jun 18 2147 UT
Interplanetary Mag. Field
Btotal: 4.5 nT
Bz: 1.9 nT south
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 21st. Credit: SOHO Extreme Ultraviolet Telescope
SPACE WEATHER
NOAA Forecasts
Updated at: 2007 Jun 18 2202 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 18 2202 UTC
Mid-latitudes
0-24 hr
24-48 hr
ACTIVE
20 %
25 %
MINOR
10 %
15 %
SEVERE
01 %
05 %
High latitudes
0-24 hr
24-48 hr
ACTIVE
25 %
30 %
MINOR
15 %
20 %
SEVERE
05 %
10 %
What's up in Space
June 18, 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.

CELESTIAL LINE: Last night in Pensacola, Florida, astronomy professor Wayne Wooten photographed a rare Euclidean line-up of the Moon, Venus, Saturn and Regulus: image. During the next 48 hours, the Moon will slide along this line, eclipsing each "point" in succession: #1, #2, #3. The first eclipse happened earlier today in Europe. Read on...

DAYLIGHT ECLIPSE OF VENUS: Today in the azure mid-afternoon skies of Europe, the crescent Moon eclipsed Venus. Achim Schaller of Germany's southern Rhine Valley snapped this picture moments before the planet disappeared:


Photo details: Nikon D200, 1/1000s at ISO 100

Lunar Eclipse of Venus Photo Gallery

more images: from Tunç Tezel of near Bolu, Turkey; from Miroslav Grnja of Bratislava, Slovak Republic; from Stephane Palfray of Etainhus, Normandy, France; from Mikhail L. Kuzmin of Moscow, Russia; from Joerg Schoppmeyer of Freiburg, Germany

SOLAR SILHOUETTE: On June 16th, the eve of Father's Day, Alan Friedman and his daughters Sophie (age 15) and Lily (age 12) climbed atop the roof of their porch in downtown Buffalo. "It was the only place we could see the afternoon sun," he explains. From there "we watched and photographed a wonderful transit of the International Space Station (ISS) against the disk of the sun." (continued below)


Photo details: 92mm A-P refractor, DMK 21BF04 webcam, Baader solar filter.

"The transit was a scant 2/3 of a second in duration, but we did see it on the computer monitor, and managed to capture 10 frames--just enough to make this slow motion record of the event. We had a blast!"

A still frame from the movie shows the dragonfly-silhouette of the space station. The wings are solar arrays, two of them having just been unfurled by the crew of space shuttle Atlantis. The ISS keeps growing, so stay tuned for new silhouettes.

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 18, 2007 there were 869 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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