You are viewing the page for Mar. 25, 2010
  Select another date:
<<back forward>> -- News and information about meteor showers, solar flares, auroras, and near-Earth asteroids
Current conditions
Solar wind
speed: 413.6 km/sec
density: 1.2 protons/cm3
explanation | more data
Updated: Today at 2345 UT
X-ray Solar Flares
6-hr max: B1
2240 UT Mar25
24-hr: B7
0430 UT Mar25
explanation | more data
Updated: Today at: 2340 UT
Daily Sun: 25 Mar. 10
Sunspot 1057 poses a threat for C-class solar flares. Credit: SOHO/MDI
Sunspot number: 14
What is the sunspot number?
Updated 24 Mar 2010

Spotless Days
Current Stretch: 0 days
2010 total: 6 days (7%)
2009 total: 260 days (71%)
Since 2004: 776 days
Typical Solar Min: 485 days
explanation | more info
Updated 24 Mar 2010

The Radio Sun
10.7 cm flux: 84 sfu
explanation | more data
Updated 24 Mar 2010

Current Auroral Oval:
Switch to: Europe, USA, New Zealand, Antarctica
Planetary K-index
Now: Kp= 2 quiet
24-hr max: Kp= 2
explanation | more data
Interplanetary Mag. Field
Btotal: 3.3 nT
Bz: 2.3 nT north
explanation | more data
Updated: Today at 2346 UT
Coronal Holes:
There are no large coronal holes on the Earth-facing side of the sun. Credit: SOHO Extreme UV Telescope
NOAA Forecasts
Updated at: 2010 Mar 25 2201 UTC
0-24 hr
24-48 hr
05 %
05 %
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 Mar 25 2201 UTC
0-24 hr
24-48 hr
20 %
05 %
01 %
01 %
01 %
01 %
High latitudes
0-24 hr
24-48 hr
10 %
05 %
01 %
01 %
01 %
01 %
What's up in Space
March 25, 2010

NEW AND IMPROVED: Turn your iPhone or iPod Touch into a field-tested global satellite tracker. The Satellite Flybys app now works in all countries.


MORNING STAR: A bright new star has appeared in the morning sky. It's Jupiter, just now emerging from a weeks-long conjunction with the sun. "Here's an image of Jupiter rising above the lighthouse at Cape Byron, the most easterly point on the Australian mainland," says Stephen Mudge of Byron Bay. The giant planet is best seen at the crack of dawn. If you're up at that hour, take a look.

SUNSPOT 1057: New sunspot 1057 has almost doubled in area since it first appeared yesterday. With a pair of dark cores each larger than planet Earth, the growing active region is an easy target for amateur solar telescopes:

Rogerio Marcon took the picture on March 24th from his backyard observatory in Campinas, Brazil. The swirling magnetic fields evident in the image harbor energy for C-class eruptions. The active region has already hurled one coronal mass ejection (CME, movie) into space and more could be in the offing. Stay tuned.

more images: from Monika Landy-Gyebnar of Veszprem, Hungary; from John Minnerath of Crowheart, Wyoming; from Wouter Verhesen of Sittard, The Netherlands; from Pete Lawrence of Selsey, West Sussex, UK; from Peter Paice of Belfast, Northern Ireland; from Pavol Rapavy of Observatory Rimavska Sobota, Slovakia; from John C McConnell of Maghaberry Northern Ireland;

FINNMARKSLOPET: You've heard of the Iditarod. But do you know about the Finnmarksløpet? "Finnmarksløpet is the world's northernmost sled dog race and the longest in Europe," explains Kerstin Langenberger of Finnmark, Norway. "It was held this year in mid-March. Every night auroras could be seen - it was awesome!

"Most of the time I was busy helping at the race, but at the Sirma checkpoint I managed to photograph some auroras dancing right above a few of the teams that were having a few hours of well-deserved rest," says Langenberger.

Indeed, March 2010 has been one of the busiest months in years for Arctic Lights. It's a sign that the sun is waking up from a long slumber. For the record, the 1019 km race was won on March 18th by Ralph Johannessen. He and his dogs crossed the finish line in only 5 days, 8 hours and 58 minutes ... under green skies, of course.

March Northern Lights Gallery
[previous Marches: 2009, 2008, 2007, 2006, 2005, 2004, 2003]

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 March 25, 2010 there were 1110 potentially hazardous asteroids.
March 2010 Earth-asteroid encounters:
Miss Distance
2001 PT9
March 3
11.1 LD
305 m
4486 Mithra
March 12
73.5 LD
3.3 km
2001 FM129
March 13
44.1 LD
1.5 km
2010 FU9
March 18
1.5 LD
19 m
2010 EF43
March 18
5.0 LD
23 m
2010 FT
March 27
5.5 LD
33 m
2002 TE66
March 28
48.0 LD
940 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.













©2019 All rights reserved.