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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: 413.3 km/sec
density: 0.9 protons/cm3
explanation | more data
Updated: Today at 2245 UT
X-ray Solar Flares
6-hr max: A0
1725 UT Jun25
24-hr: A1
0925 UT Jun25
explanation | more data
Updated: Today at: 2245 UT
Daily Sun: 25 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= 2
quiet
explanation | more data
Current Auroral Oval:
Switch to: Europe, USA, New Zealand, Antarctica
Credit: NOAA/POES
Updated: 2007 Jun 25 2113 UT
Interplanetary Mag. Field
Btotal: 4.1 nT
Bz: 1.0 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 29th. Credit: SOHO Extreme Ultraviolet Telescope
SPACE WEATHER
NOAA Forecasts
Updated at: 2007 Jun 25 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 25 2202 UTC
Mid-latitudes
0-24 hr
24-48 hr
ACTIVE
10 %
10 %
MINOR
05 %
05 %
SEVERE
01 %
01 %
High latitudes
0-24 hr
24-48 hr
ACTIVE
15 %
15 %
MINOR
05 %
05 %
SEVERE
01 %
01 %
What's up in Space
June 25, 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 25, 26, 27, 28, 29, 30, July 1.

COMING SOON? For the past 12 days, the Sun has been blank (no sunspots) and solar activity has been low. This could soon change. Japan's Hinode spacecraft is monitoring an x-ray hot-spot on the Sun's eastern limb:

The x-rays may herald an active sunspot just over the horizon. Amateur astronomers with solar telescopes should keep an eye on this region of the Sun for further developments.

UPDATE: A sunspot is now emerging over the eastern limb as shown in these images from Guenter Kleinschuster of Feldbach, Styria, Austria; from Dave Tyler of Buckinghamshire UK; from Alcaria Rego of Almada, Portugal; from Howard Eskildsen of Ocala, Florida; from Peter Paice of Belfast, Northern Ireland.

VENUS PILLARS: Last night in Quebec City, photographer Dominic Cantin was watching Venus sink toward the western horizon when something extraordinary happened. The planet changed shape, spreading into a vertical column of light:


Photo details: Pentax *Ist Ds, 800 ASA, 3 sec. exposure

"The phenomenon was clearly visible to unaided eye," says Cantin. "It was a very nice display that lasted until Venus set." More images: #1, #2, #3, #4.

These are called Venus pillars, and they are caused by flat, six-sided ice crystals fluttering down from high clouds. The crystals reflect light from their horizontal faces, spreading a single point of light into a luminous column. Among all the objects in the heavens, only the Sun, Moon and Venus are bright enough to produce naked-eye pillars.

When the Sun goes down tonight, step outside and look west for your own Venus pillars. If you don't see any, let Saturn be your consolation prize: 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 June 25, 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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