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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: 465.3 km/sec
density: 4.2 protons/cm3
explanation | more data
Updated: Today at 2344 UT
X-ray Solar Flares
6-hr max: B4
1830 UT Jul26
24-hr: B4
1630 UT Jul26
explanation | more data
Updated: Today at: 2240 UT
Daily Sun: 26 Jul 10
Sunspot 1089 is large but quiet, producing little solar flare activity. Credit: SOHO/MDI

more images: from John Stetson of South Portland, Maine; from Peter Paice of Belfast,Northern Ireland; from Cai-Uso Wohler of Bispingen, Germany; from Peter Desypris of Island of Syros Greece;
Sunspot number: 39
What is the sunspot number?
Updated 24 July 2010

Spotless Days
Current Stretch: 0 days
2010 total: 35 days (17%)
2009 total: 260 days (71%)
Since 2004: 803 days
Typical Solar Min: 486 days
explanation | more info
Updated 24 July 2010


The Radio Sun
10.7 cm flux: 85 sfu
explanation | more data
Updated 24 July 2010

Current Auroral Oval:
Switch to: Europe, USA, New Zealand, Antarctica
Credit: NOAA/POES
Planetary K-index
Now: Kp= 1 quiet
24-hr max: Kp= 2
quiet
explanation | more data
Interplanetary Mag. Field
Btotal: 6.8 nT
Bz: 1.4 nT north
explanation | more data
Updated: Today at 2346 UT
Coronal Holes:
A solar wind stream flowing from the indicated coronal hole is gently buffeting Earth's magnetic field. Credit: SDO/AIA
SPACE WEATHER
NOAA Forecasts
Updated at: 2010 Jul 26 2201 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: 2010 Jul 26 2201 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
15 %
05 %
SEVERE
05 %
01 %
What's up in Space
July 26, 2010

ANDROID FLYBYS: Our field-tested satellite tracker is now available for Android phones. Features: Global predictions and flyby alarms! Learn more.

 

SPINNING BEHEMOTH: Although Jupiter is ten times wider than Earth, it spins more than twice as fast. One day on the giant planet lasts just 9 hours and 55 minutes. To illustrate the dizzying pace, astrophotographer Anthony Wesley of Australia made a five-hour movie of Jupiter in motion on July 23rd. Click here to make the planet spin.

OVER THE HORIZON: Something bright and active on the far side of the sun is about to turn toward Earth. Magnetic loops towering over the eastern limb herald its approach:

NASA's Solar Dynamics Observatory took this picture during the early hours of July 26th. The bright glow revealed by SDO's extreme ultraviolet camera comes from million-degree plasma trapped by overlying magnetic fields. A sunspot is likely at the bottom of it all.

Or maybe two sunspots... NASA's STEREO-B spacecraft is stationed over the sun's eastern limb, and it sees a pair of active regions approaching single file. The one peeking over the limb now is actually the smaller of the two. Readers with solar telescopes should train their optics here.

BREATHTAKING PLANETS: "Standing on the summit of Mount Lawu, 3265m above sea level on July 21st, I was treated to one of the most beautiful views of my life," reports Jia Hao of Java, Indonesia. "With reknowed Mount Merapi and Mount Merbabu soaked in twilight colors and city lights from Solo shining like stars, four of the major planets, Mercury, Venus, Mars and Saturn lined up in a row above western horizon."

"The whole scene was simply surreal," he says, "and it did a much better job taking my breath away than the high altitude!"

Readers, take a deep breath, because this scene is about to get even better. Venus, Mars and Saturn are converging for a rare three-way conjunction in August. The show reaches its peak on August 12th and 13th when the crescent Moon joins them for a sunset gathering of surpassing beauty. Browse the sky maps for coming attractions: July 26, 27, 28, 29, 30, 31, August 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13


Solar Eclipse Photo Gallery
[NASA: South Pacific Eclipse] [animated 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 July 26, 2010 there were 1140 potentially hazardous asteroids.
Upcoming Earth-asteroid encounters:
Asteroid
Date(UT)
Miss Distance
Mag.
Size
1999 JD6
Jul 27
53.9 LD
17
1.8 km
2010 KZ117
Aug 4
72.6 LD
18
1.0 km
6239 Minos
Aug 10
38.3 LD
18
1.1 km
2005 NZ6
Aug 14
60.5 LD
18
1.3 km
2002 CY46
Sep 2
63.8 LD
16
2.4 km
2010 LY63
Sep 7
56.1 LD
18
1.3 km
2009 SH2
Sep 30
7.1 LD
25
45 m
1998 UO1
Oct 1
32.1 LD
17
2.1 km
2005 GE59
Oct 1
77 LD
18
1.1 km
2001 WN5
Oct 10
41.8 LD
18
1.0 km
1999 VO6
Oct 14
34.3 LD
17
1.8 km
1998 TU3
Oct 17
69.1 LD
15
5.3 km
1998 MQ
Oct 23
77.7 LD
17
2.0 km
2007 RU17
Oct 29
40.6 LD
18
1.0 km
2003 UV11
Oct 30
5 LD
19
595 m
3838 Epona
Nov 7
76.8 LD
16
3.4 km
2005 QY151
Nov 16
77.7 LD
18
1.3 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 space weather bureau
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.
STEREO
  3D views of the sun from NASA's Solar and Terrestrial Relations Observatory
Daily Sunspot Summaries
  from the NOAA Space Environment Center
Current Solar Images
  from the National Solar Data Analysis Center
Science Central
   
  more links...
   
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