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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: 352.8 km/sec
density: 1.6 protons/cm3
explanation | more data
Updated: Today at 2245 UT
X-ray Solar Flares
6-hr max: A0
1705 UT Jul18
24-hr: A0
1705 UT Jul18
explanation | more data
Updated: Today at: 2245 UT
Daily Sun: 18 Jul 08
A sunspot is emerging at the location indicated by the arrow. Magnetograms of the spot show it to be an old Cycle 23 active region. Credit: SOHO/MDI

images: from Greg Piepol of Rockville, Md
Sunspot number: 0
What is the sunspot number?
Updated 17 July 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= 1 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: 3.9 nT
Bz: 1.8 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 July 19th. Credit: SOHO Extreme UV Telescope
SPACE WEATHER
NOAA Forecasts
Updated at: 2008 Jul 18 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 Jul 18 2203 UTC
Mid-latitudes
0-24 hr
24-48 hr
ACTIVE
10 %
10 %
MINOR
01 %
01 %
SEVERE
01 %
01 %
High latitudes
0-24 hr
24-48 hr
ACTIVE
10 %
10 %
MINOR
01 %
01 %
SEVERE
01 %
01 %
What's up in Space
July 18, 2008
AURORA ALERTS: Did you miss the Northern Lights of July 12th? Next time get a wake-up call from Space Weather PHONE.  

SPACE STATION FLYBYS: Sky watchers in Europe and North America are in for a treat. For the next few days, the International Space Station will be orbiting over the two continents, appearing brightly in the morning and evening sky. Check the Simple Satellite Tracker to find out when to look.

images: from Alan Dyer of Alberta, Canada; from Adrian New of San Antonio, Texas; from Jim Tegerdine of Marysville, Washington

B'LUNACY: Once a month on a beach in southern France, photographer Laurent Laveder meets his girlfriend Sabine, and together they experience the full Moon. Last night they measured it, framed it and flattened it with a rolling pin. "And here," says Laveder, "is Sabine flying it like a balloon." Make that b'lune:

Sabine also told lunar time and tried (but failed) to become an astronaut. Next time she plans to take her space suit. Laveder took all these pictures using his Canon 350D, a good camera for a bit of lunacy.

more images: from Catalin M. Timosca of Turda, Romania; from Mohamad Soltanolkottabi of Esfahan, Iran; from Mark Seibold of Portland Oregon; from Shevill Mathers of Hobart, Tasmania; from Mark E. Peter of Pickerington, Ohio; from Tom Soetaert of Lawrence, Kansas; from Tugrul Ussakli of Istanbul, Turkey;

DIGGING MARS: (3D glasses required) NASA's Phoenix lander is hard at work digging in the icy soil of arctic Mars, and here is one of the trenches:

Spaceweather reader Stuart Atkinson of Kendal, England, created the anaglyph by combining left- and right-eye images from Phoenix's stereo camera. "I love this view," he says. "It shows so much detail: Phoenix's scoop hovering above the ground; the shadow of the camera mast on the scoop and the ground beneath it; the ragged edge of the trench, with small rocks and stones tumbling into it; scratches and scrapes on the trench floor made by the sharp edge of the scoop. It's just like being there."

At the moment, Phoenix is drilling into a layer of ice at the bottom of the trench using a motorized rasp located on the back of the scoop. The purpose is to create a pile of "shaved ice" that the scoop can pick up and dump into one of Phoenix's ovens for analysis. Mission scientists want to know if martian ice contains nutrients and minerals that might support microbial life. Stay tuned for updates.


2008 Noctilucent Cloud Gallery
[Strange Clouds] [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.
On July 18, 2008 , there were 962 potentially hazardous asteroids.
July 2008 Earth-asteroid encounters:
Asteroid
Date(UT)
Miss Distance
Mag.
Size
2003 YE45
July 13
16.5 LD
15
1.4 km
2008 BT18
July 14
5.9 LD
13
1.0 km
2003 LC5
July 15
62 LD
16
1.4 km
2008 NP3
July 17
6.8 LD
18
85 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 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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