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

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Science news and information about the Sun-Earth environment.

SPACE WEATHER
Current
Conditions

Solar Wind
speed: 406.3 km/s
density:
2.5 protons/cm3
explanation | more data
Updated: Today at 2246 UT


X-ray Solar Flares

6-hr max:
A9 1655 UT Nov13
24-hr: B9 0640 UT Nov13
explanation | more data
Updated: Today at 2245 UT

Daily Sun: 13 Nov '06

A new, small sunspot is emerging over the sun's eastern limb. Credit:
SOHO/MDI

Sunspot Number: 18
What is the sunspot number?
Updated: 12 Nov 2006

Far Side of the Sun

This holographic image reveals no large sunspots on the far side of the sun. Image credit: SOHO/MDI

Interplanetary Mag. Field
Btotal: 3.1 nT
Bz:
1.3 nT north
explanation | more data
Updated: Today at 2247 UT

Coronal Holes:

There are no large coronal holes on the Earth-facing side of the Sun. Credit: NOAA GOES-13.


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 2006 Nov 13 2203 UTC
FLARE 0-24 hr 24-48 hr
CLASS M 05 % 05 %
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 2006 Nov 13 2203 UTC
Mid-latitudes
0-24 hr 24-48 hr
ACTIVE 10 % 10 %
MINOR 01 % 01 %
SEVERE 01 % 01 %

High latitudes
0-24 hr 24-48 hr
ACTIVE 15 % 15 %
MINOR 05 % 05 %
SEVERE 01 % 01 %

What's Up in Space -- 13 Nov 2006
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Autumn is here, and it's a wonderful time for stargazing. Find out what's up from Spaceweather PHONE.

SOLAR WIND: Earth is exiting a solar wind stream that caused beautiful auroras when it first hit on Nov. 9th and 10th. The next such display is at least a week away unless sunspot 923 intervenes with an Earth-directed flare.

FIND THE SUNSPOT: It's a bird, it's a plane ... it's a sunspot? Yesterday, Mila Zinkova of San Francisco took this picture of the setting sun: (continued below)

Among the birds are "two brown pelicans (one diving), two more birds so far away we can't see what kind they are, and finally sunspot 923," says Zinkova. "Can you find the sunspot?"

A second photo taken through her Personal Solar Telescope revealed the black heart of the sunspot in detail: take a look.

Bonus: Transit of Mercury Photo Gallery

ALASKAN PILLAR: Deep in the interior of Alaska, Keane Richards paused to watch the sun set on Nov. 4th when, suddenly, a luminous pillar appeared:


The sun is behind the snowy branch. More images: #1, #2, #3

"This was one of the best sun pillars I've seen," says Richards. "Small snowflakes from high clouds seemed to cause it."

"These are really lovely images," says atmospheric oprics expert Les Cowley. "Large plate shaped ice crystals fluttering and wobbling as they drifted down through the cold clear air made this lower sun pillar. Wobbly crystals blur most halos but they make sun pillars taller and better."



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 13 Nov 2006 there were 825 known Potentially
Hazardous Asteroids

Oct-Nov 2006 Earth-asteroid encounters
ASTEROID

 DATE
(UT)

MISS DISTANCE

MAG.

 SIZE
2006 UC185

Oct. 23

6.3 LD

17

95 m
2006 UZ215

Oct. 27

7.6 LD

19

35 m
2006 UJ185

Oct. 30

0.7 LD

17

10 m
2006 UA216

Oct. 31

6.0 LD

16

90 m
2006 UQ216

Nov. 7

5.6 LD

21

15 m
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 --a gallery of up-to-date solar pictures from the National Solar Data Analysis Center at the Goddard Space Flight Center. See also the GOES-12 Solar X-ray Imager.

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

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

Observable Comets -- from the Harvard Minor Planet Center.

What is the Interplanetary Magnetic Field? -- A lucid answer from the University of Michigan. See also the Anatomy of Earth's Magnetosphere.

Real-time Solar Wind Data -- from NASA's ACE spacecraft. How powerful are solar wind gusts? 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 1998 to 2001

Mirages: Mirages in Finland; An Introduction to Mirages;

NOAA Solar Flare and Sunspot Data: 1996, 1997, 1998, 1999; 2000; 2001; 2002; 2003; 2004; 2005; Jan-Mar 2006;

Space Audio Streams: (University of Florida) 20 MHz radio emissions from Jupiter: #1, #2, #3, #4; (NASA/Marshall) INSPIRE: #1; (Stan Nelson of Roswell, New Mexico) meteor radar: #1, #2;

GLOSSARY | SPACE WEATHER TUTORIAL

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


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