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<<back forward>> -- News and information about meteor showers, solar flares, auroras, and near-Earth asteroids
Current conditions
Solar wind
speed: 589.0 km/sec
density: 1.6 protons/cm3
explanation | more data
Updated: Today at 2344 UT
X-ray Solar Flares
6-hr max: A7
2055 UT Jul01
24-hr: A7
2055 UT Jul01
explanation | more data
Updated: Today at: 2340 UT
Daily Sun: 01 Jul 10
Sunspot 1084 has a simple magnetic field that does not harbor energy for strong solar flares. Credit: SOHO/MDI
Sunspot number: 11
What is the sunspot number?
Updated 30 Jun 2010

Spotless Days
Current Stretch: 0 days
2010 total: 35 days (19%)
2009 total: 260 days (71%)
Since 2004: 803 days
Typical Solar Min: 486 days
explanation | more info
Updated 30 Jun 2010

The Radio Sun
10.7 cm flux: 74 sfu
explanation | more data
Updated 30 Jun 2010

Current Auroral Oval:
Switch to: Europe, USA, New Zealand, Antarctica
Planetary K-index
Now: Kp= 3 quiet
24-hr max: Kp= 4
explanation | more data
Interplanetary Mag. Field
Btotal: 3.7 nT
Bz: 1.1 nT south
explanation | more data
Updated: Today at 1439 UT
Coronal Holes:
Earth is inside a solar wind stream flowing from the indicated coronal hole. Credit: SDO/AIA
NOAA Forecasts
Updated at: 2010 Jul 01 2201 UTC
0-24 hr
24-48 hr
01 %
01 %
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 01 2201 UTC
0-24 hr
24-48 hr
20 %
20 %
10 %
10 %
01 %
01 %
High latitudes
0-24 hr
24-48 hr
35 %
30 %
15 %
10 %
01 %
01 %
What's up in Space
July 1, 2010

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


SOUTH PACIFIC SOLAR ECLIPSE: Yearning to visit the South Pacific? This is the month to set sail. On July 11th, the Moon will pass directly in front off the sun, producing a total solar eclipse. The path of totality stretches across the south Pacific Ocean, making landfall in only three places: Mangaia (Cook Islands), Easter Island, and the southern tip of South America. Get the details from NASA.

PINWHEEL SUNSPOT: The dark core of sunspot 1084 is twice as wide as Earth itself. More impressive, however, is the enormous swirl of hot gas and magnetic fields suspended overhead. Today's extreme UV image from NASA's Solar Dynamics Observatory reveals the sunspot's pinwheel canopy:

This magnetic architecture must be stable, because sunspot 1084 is remarkably quiet. There hasn't been the slightest hint of a flare from this "active" region for the past two days. It is, however, photogenic. Readers with solar telescopes are encouraged to take a look.

more images: from Peter Desypris of Island of Syros, Greece; from John C McConnell of Maghaberry Northern Ireland; from Andreas Murner of Rosenheim, Bavaria, Germany; from Jan Timmermans of Valkenswaard, The Netherlands; from Michael Boschat of Halifax, Nova Scotia, Canada

STORKS AND SPACE WEATHER: This week, sky watchers in northern Europe are witnessing an intense display of electric-blue noctilucent clouds. It's a veritable "NLC storm." Storks are enjoying the show, too:

"Each year in late spring, thousands of storks (Ciconia ciconia) arrive in Poland," reports Marek Nikodem of Szubin, Poland. "Last night I caught one nesting during the most beautiful display of NLCs this year."

Summer is the season for NLCs, and the recent solstice seems to have kicked these mysterious clouds into high gear. High-latitude sky watchers should be alert for electric blue after sunset.

more images: from Aurimas Dirse of Vilnius, Lithuania; from Darius Gasiunas of Ignalina, Lithuania; from Janis Satrovskis of Burtnieki, Latvia; from Mariusz RudziƄski of Mirostowice Dolne, Poland; from Lars Zielke of Nightsky Observatory, Tvis, Denmark; from Martin McKenna of Maghera, Co. Derry, N. Ireland; from Barbara Grudzinska of Warsaw,Poland

Lunar Eclipse Photo Gallery
[Science@NASA: Big Lunar Eclipse] [astronomy alerts]

May 2010 Aurora Gallery
[previous Mays: 2008, 2005, 2004, 2003, 2002] [aurora alerts]

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 1, 2010 there were 1138 potentially hazardous asteroids.
June-July 2010 Earth-asteroid encounters:
Miss Distance
2010 JR34
May 14
5.8 LD
12 m
2003 HR32
May 17
55.2 LD
1.0 km
2010 JN71
May 26
8.2 LD
245 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 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.
  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...
©2008, -- This site is penned daily by Dr. Tony Phillips.













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