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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: 410.8 km/sec
density: 0.7 protons/cm3
explanation | more data
Updated: Today at 2245 UT
X-ray Solar Flares
6-hr max: A0
2245 UT Jun04
24-hr: A0
1040 UT Jun04
explanation | more data
Updated: Today at: 2245 UT
Daily Sun: 04 Jun 08
The sun is blank--no sunspots. Credit: SOHO/MDI
Sunspot number: 0
What is the sunspot number?
Updated 04 June 2008
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= 0 quiet
24-hr max: Kp= 2
quiet
explanation | more data
Current Auroral Oval:
Switch to: Europe, USA, New Zealand, Antarctica
Credit: NOAA/POES
What is the auroral oval?
Interplanetary Mag. Field
Btotal: 2.6 nT
Bz: 0.5 nT north
explanation | more data
Updated: Today at 2246 UT
Coronal Holes:
There are no coronal holes on the Earth-facing side of the sun. Credit: SOHO Extreme UV Telescope
SPACE WEATHER
NOAA Forecasts
Updated at: 2008 Jun 04 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: 2008 Jun 04 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
05 %
05 %
MINOR
01 %
01 %
SEVERE
01 %
01 %
What's up in Space
June 4, 2008
FLYBY ALERT! Space shuttle Discovery launched on May 31st. Get your flyby alerts from Space Weather PHONE  

ISS IN BROAD DAYLIGHT: Veteran sky watcher David Moore of Dublin, Ireland, has sighted the ISS with the naked eye in broad daylight. "I saw it on June 2nd around 9:21 pm local time while the sun was still 2.1o above the horizon." Impossible? Consider the following: Venus is visible in daylight, and the growing ISS (with Discovery docked alongside) is now brighter than Venus. "It was remarkably easy to see," he says, "even though I was not wearing my spectacles." Of course, the space station is still easier to see in the dark. Check our Satellite Tracker for times to look.

FULL VENUS: On June 9th, Venus will pass directly behind the sun--an event astronomers call "superior conjunction." Sun-blocking coronagraphs onboard the Solar and Heliospheric Observatory (SOHO) are monitoring Venus as it disappears into the glare:

Too bad we can't peek around the sun's limb on June 9th to see Venus on the other side. Like the Moon, Venus has phases and on June 9th the planet will be gloriously full. The entire hemisphere facing Earth will be illuminated. Venus's acid-laced clouds are terrific reflectors and a full Venus would surely be visible during daylight hours, an intense pinprick of light in the blue sky. If only the sun were not in the way....

A SCOOP OF MARS: Phoenix's 7.7-foot robotic arm has reached out and taken its first scoop of Mars. A camera attached to the arm snapped this picture of the harvest on June 2nd:

Note the bright white material highlighting the red crumbly soil. "We don't know what this material is yet," says University of Arizona's Pat Woida, a senior engineer on the Phoenix team. It could be "ice, a salt or something new."

This first scoop was just a test, a light workout for the newly extended arm, and the contents were dumped back onto the ground. Soon, however, similar samples will be drawn inside the lander for analysis by microscopes, electrical and thermal probes, a mass spectrometer and a wet chemistry lab. The mystery material may yet be known. Stay tuned for updates.

3D BONUS: Like a human being, Phoenix's stereo camera has a right and left eye for seeing things in three dimensions. Using images from the two points of view, graphic artist Patrick Vantuyne of Belgium has created some superb anaglyphs of the lander's surroundings. Put on your 3D glasses and behold: Mars Yeti (Phoenix's arm makes a first impression on the Red Planet); One small step... (one of the lander's three feet); Vines (the camera's mast casts a criss-crossed shadow on the ground).


May 2008 Aurora Gallery
[Aurora Alerts] [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. [comment]
On June 4, 2008 there were 956 potentially hazardous asteroids.
June-July 2008 Earth-asteroid encounters:
Asteroid
Date(UT)
Miss Distance
Mag.
Size
2008 KO
June 1
4.4 LD
18
60 m
2008 KT
June 3
3.3 LD
20
9 m
2008 KN11
June 22
9.0 LD
18
110 m
1999 VU
June 29
65 LD
16
1.6 km
2008 BT18
July 14
5.9 LD
13
1.0 km
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...
©2008, SpaceWeather.com -- This site is penned daily by Dr. Tony Phillips.
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