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SpaceWeather.com -- News and information about meteor showers, solar flares, auroras, and near-Earth asteroids
 
Solar wind
speed: 448.0 km/sec
density: 5.2 protons/cm3
explanation | more data
Updated: Today at 2347 UT
X-ray Solar Flares
6-hr max: C3
2147 UT Jun28
24-hr: M2
1612 UT Jun28
explanation | more data
Updated: Today at: 2300 UT
Daily Sun: 28 Jun 12
Sunspots 1512 and 1513 are crackling with C-class solar flares. Credit: SDO/HMI
Sunspot number: 79
What is the sunspot number?
Updated 28 Jun 2012

Spotless Days
Current Stretch: 0 days
2012 total: 0 days (0%)
2011 total: 2 days (<1%)
2010 total: 51 days (14%)
2009 total: 260 days (71%)
Since 2004: 821 days
Typical Solar Min: 486 days

Updated 28 Jun 2012


The Radio Sun
10.7 cm flux: 106 sfu
explanation | more data
Updated 28 Jun 2012

Current Auroral Oval:
Switch to: Europe, USA, New Zealand, Antarctica
Credit: NOAA/POES
Planetary K-index
Now: Kp= 1 quiet
24-hr max: Kp= 3
quiet
explanation | more data
Interplanetary Mag. Field
Btotal: 3.1 nT
Bz: 2.7 nT north
explanation | more data
Updated: Today at 2346 UT
Coronal Holes: 28 Jun 12
Solar wind flowing from this coronal hole should reach Earth on July 1-2. Credit: SDO/AIA.
SPACE WEATHER
NOAA Forecasts
Updated at: 2012 Jun 28 2200 UTC
FLARE
0-24 hr
24-48 hr
CLASS M
30 %
30 %
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: 2012 Jun 28 2200 UTC
Mid-latitudes
0-24 hr
24-48 hr
ACTIVE
15 %
25 %
MINOR
05 %
10 %
SEVERE
01 %
01 %
High latitudes
0-24 hr
24-48 hr
ACTIVE
20 %
15 %
MINOR
25 %
30 %
SEVERE
20 %
40 %
 
Thursday, Jun. 28, 2012
What's up in space
 

Thirty-five new items have just been added to our Meteorite Jewelry collection. Browse the Space Weather Store for something out of this world.

 
Meteorite jewelry

CHANCE OF FLARES: Sunspot 1512 has a 'beta-gamma' magnetic field that harbors energy for M-class solar flares. NOAA forecasters estimate a 25% chance of such an eruption during the next 24 hours.

X THREE MILLION: On the Richter Scale of Solar Flares, X3 is considered to be a big explosion. How about X3 million? NASA's Hubble Space Telescope has seen what happens when a planet gets hit by such a flare. This artist's concept, released today by the space agency, illustrates the impact of an X3000000-class stellar flare on exoplanet HD 189733b:

The flare, detected by NASA's Swift satellite, scorched the top of the planet's atmosphere with a powerful blast of ultraviolet radiation and X-rays. Hours later, Hubble detected more than 1,000 tons of gas every second flying away at 300,000 mph. HD 189733b is a gas giant about 14% more massive than Jupiter, so it hardly misses the atmosphere it lost. Millions of years of these flares, however, will eventually make a dent even in such a massive world. So the next time there's an X-flare here in the solar system, just remember, it could be worse.

MORNING SKY SHOW: Set your alarm for dawn. Venus and Jupiter are converging in the morning sky, setting the stage for a beautiful three-way conjunction with the crescent Moon in July. This morning, Giuseppe Petricca photographed the bright planets shining in the east over Pisa, Italy:

"What a wonderful morning," says Petricca. "Jupiter appeared first, bright and low on the horizon. Through the telescope we could clearly see bands on the planet. Venus arrived shortly thereafter."

Here are some key dates in July:

On July 4th, Venus will pass dead-center through the Hyades cluster, a loose grouping of stars 153 light years from Earth. The temporary addition of Venus will make it seem that a supernova has gone off in the cluster.

Three mornings later, on July 7th, Venus and Jupiter line up with Aldebaran, the bright red eye of Taurus the Bull. Aldebaran is a red giant star of first magnitude. Together with the two planets, it forms an almost perfect vertical line in the brightening dawn sky.

On July 9th, Venus and Aldebaran converge to form a planet-star pair of surpassing beauty. Scarcely more than a degree of arc will separate the two celestial bodies as Jupiter looks down from overhead.

And then, on July 15th, a 12% crescent Moon joins the show, forming a bright celestial triangle with Venus and Jupiter.

Meanwhile, browse our Realtime Photo Gallery for more planet-shots.


Realtime Noctilucent Cloud Photo Gallery
[previous years: 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2011]

  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 28, 2012 there were potentially hazardous asteroids.
Recent & Upcoming Earth-asteroid encounters:
Asteroid
Date(UT)
Miss Distance
Mag.
Size
2012 LU
Jun 23
5.8 LD
--
39 m
2012 MY2
Jun 29
1.3 LD
--
24 m
2003 KU2
Jul 15
40.2 LD
--
1.3 km
2004 EW9
Jul 16
46.8 LD
--
2.1 km
2002 AM31
Jul 22
13.7 LD
--
1.0 km
37655 Illapa
Aug 12
37 LD
--
1.2 km
2000 ET70
Aug 21
58.5 LD
--
1.1 km
1998 TU3
Aug 25
49.2 LD
--
4.9 km
2009 AV
Aug 26
62.8 LD
--
1.1 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 web 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 Dynamics Observatory
  Researchers call it a "Hubble for the sun." SDO is the most advanced solar observatory ever.
STEREO
  3D views of the sun from NASA's Solar and Terrestrial Relations Observatory
Solar and Heliospheric Observatory
  Realtime and archival images of the Sun from SOHO.
Daily Sunspot Summaries
  from the NOAA Space Environment Center
Heliophysics
  the underlying science of space weather
Trade Show Displays
   
  more links...
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