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SpaceWeather.com -- News and information about meteor showers, solar flares, auroras, and near-Earth asteroids

SpaceWeather.com
Science news and information about the Sun-Earth environment.

SPACE WEATHER
Current
Conditions

Solar Wind
speed: 673.1 km/s
density:
1.3 protons/cm3
explanation | more data
Updated: Today at 2239 UT

X-ray Solar Flares
6-hr max:
A1 1915 UT Feb14
24-hr: A1 1915 UT Feb14
explanation | more data
Updated: Today at 2235 UT

Daily Sun: 14 Feb '07

The sun is blank today and solar activity is very low. Credit: SOHO/MDI!


Sunspot Number: 0
What is the sunspot number?
Updated: 13 Feb 2007

Far Side of the Sun

This holographic image reveals one small sunspot group on the far side of the sun. Image credit: SOHO/MDI

Interplanetary Mag. Field
Btotal: 5.1 nT
Bz:
1.1 nT north
explanation | more data
Updated: Today at 2239 UT

Coronal Holes:

A solar wind stream flowing from the indicated coronal hole will reach Earth Feb 13th or 14th. Credit: SOHO Extreme UV Telescope


SPACE WEATHER
NOAA
Forecasts

Solar Flares: Probabilities for a medium-sized (M-class) or a major (X-class) solar flare during the next 24/48 hours are tabulated below.
Updated at 2007 Feb 14 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 2007 Feb 14 2203 UTC
Mid-latitudes
0-24 hr 24-48 hr
ACTIVE 20 % 20 %
MINOR 10 % 10 %
SEVERE 01 % 01 %

High latitudes
0-24 hr 24-48 hr
ACTIVE 35 % 30 %
MINOR 15 % 15 %
SEVERE 10 % 05 %

What's Up in Space -- 14 Feb 2007
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Cards, flowers, chocolate... what's missing? The heavens. Spaceweather PHONE for Valentine's Day.

HEART NEBULA: After observing today's quiet sun through his solar telescope, and not seeing much, Oregon artist Mark Siebold's thoughts turned elsewhere--to the Heart Nebula (IC 1805) in the constellation Cassiopeia. He quickly made this pastel sketch to share as a Valentine greeting to spaceweather readers. Happy Valentine's Day!

AURORA WATCH: Sky watchers from Scandinavia to Alaska should remain alert for auroras tonight. A high-speed solar wind stream is buffeting Earth's magnetic field, causing mild but beautiful geomagnetic storms.

In the Swedish Lapland, Patricia Cowern reports: "I was woken at 2 o'clock this morning by a Space Weather Alert. Then I woke my houseguests to show them what was going on outside."


Photo details: Canon 10D, 20mm lens, 30 secs, 400 asa

"It was a wonderful hour of Northern Lights. My guests from England came here to see the auroras--but it had been cloudy all week. Now, just one day before going home, they are extremely happy."

ICE HALOS: Sometimes cold is good. Yesterday in Tracy, Minnesota, the winter clouds parted to reveal a lovely ice halo around the sun:


"This picture was taken with a Nikon Coolpix 5700," says Lois Reinert.

"The cold weather that we have been having in this area is good for producing frost crystals and sundogs," says photographer Lois Reinert. In one picture she took, bright specks mark the location of individual ice crystals floating in mid-air. These are called diamond dust, and they produce some of the most spectacular halos on Earth.

So, if it's cold where you live, look around the sun. You might be pleasantly surprised by what you find there.



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 14 Feb 2007 there were 842 known Potentially
Hazardous Asteroids

Feb-Mar 2007 Earth-asteroid encounters
ASTEROID

 DATE
(UT)

MISS DISTANCE

MAG.

 SIZE
2006 AM4

Feb. 1

5.2 LD

16

180 m
2007 BZ48

Feb. 7

4.5 LD

18

30 m
2006 VV2

Mar. 31

8.8 LD

9

2 km
Notes: LD is a "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 Environment 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. (European Mirror Site)

Daily Sunspot Summaries -- from the NOAA Space Environment Center.

Current Solar Images -- from the National Solar Data Analysis Center

X-ray images of the Sun: GOES-12 and GOES-13

Recent Solar Events -- a summary of current solar conditions from lmsal.com.

What is the Magnetosphere?

The Lion Roars -- visit this site to find out what the magnetosphere sounds like.

List of Potentially Hazardous Asteroids -- from the Harvard Minor Planet Center.

Observable Comets -- from the Harvard Minor Planet Center.

Real-time Solar Wind Data -- from NASA's ACE spacecraft.

How powerful are solar wind gusts? Not very! Read this story from Science@NASA.

More Real-time Solar Wind Data -- from the Solar and Heliospheric Observatory Proton Monitor.

Lists of Coronal Mass Ejections -- from 1996 to 2006

Mirages: Mirages in Finland; An Introduction to Mirages;

NOAA Solar Flare and Sunspot Data: 1994, 1995, 1996, 1997, 1998, 1999; 2000; 2001; 2002; 2003; 2004; 2005; Jan-Mar 2006; Apr-Jun 2006; Jul-Sep 2006; Oct-Dec 2006.

This site is penned daily by Dr. Tony Phillips: email


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