SPACE WEATHER
Current
Conditions

Solar Wind
speed: 458.9 km/s
density:
1.3 protons/cm3
explanation | more data
Updated: Today at 0946 UT


X-ray Solar Flares

6-hr max:
B1 0945 UT May09
24-hr: B1 0945 UT May09
explanation | more data
Updated: Today at 0945 UT

Daily Sun: 09 May '06

These sunspots pose no threat for strong solar flares. Credit: SOHO/MDI.


Sunspot Number: 53
What is the sunspot number?
Updated: 08 May 2006

Far Side of the Sun

This holographic image reveals one mid-sized spot on the far side of the sun. Image credit: SOHO/MDI

Interplanetary Mag. Field
Btotal: 3.2 nT
Bz:
1.9 nT north
explanation | more data
Updated: Today at 0947 UT

Coronal Holes:

A solar wind stream flowing from the indicated coronal hole will reach Earth on May 12th or 13th. 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 2006 May 08 2206 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 May 08 2206 UTC
Mid-latitudes
0-24 hr 24-48 hr
ACTIVE 15 % 20 %
MINOR 01 % 05 %
SEVERE 01 % 01 %

High latitudes
0-24 hr 24-48 hr
ACTIVE 20 % 30 %
MINOR 05 % 10 %
SEVERE 01 % 05 %

What's Up in Space -- 9 May 2006
Subscribe to Space Weather News

Roses. Candy. Spatulas? Make that the stars: Spaceweather PHONE for Mother's Day.

COMET OUTBURST: According to observers in Italy, fragment B of comet 73P/Schwassmann Wachmann 3 has suddenly brightened to 5th magnitude. The outburst probably signals another breakup of the furiously decaying comet-fragment. Confirming observations are requested: sky map.

HERE THEY COME: More than 60 fragments of comet 73P are racing toward Earth. Top speed: 11,000 mph. There's no danger of a collision; at closest approach on May 12th - 14th, the mini-comets will be 6 million miles away. That's close enough, however, for a marvelous view through backyard telescopes.

Sky maps: May 9, 10, 11, 12, 13, 14

On May 7th, fragment C raced by the Ring Nebula (M57). "The comet was moving so fast that I could see movement in only 5 seconds," says John Chumack of Yellow Springs, Ohio, who took this picture:

"As the comet's dust tail crossed over M57, it actually caused the nebula's central star to flicker--that was really neat!" he says.

more images: from Stefan Seip of Stuttgart, Germany; from Mike Holloway of Van Buren, Arkansas; from Boeckel Thorsten of Fuerstenfeldbruck, Bavaria.

SUNSET MIRAGE: "Who says the sun is round? Not here in San Francisco," reports Mila Zinkova who photographed this extraordinary sunset yesterday:

The strange shape of the setting sun was caused by a temperature inversion layer above the water, producing a mock-mirage. "The sun was changing shape every second," she says. "This is the kind of sunset that often displays green flashes, but tonight there was too much fog to see the green."



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 9 May 2006 there were 785 known Potentially
Hazardous Asteroids

May 2006 Earth-asteroid encounters
ASTEROID

 DATE
(UT)

MISS DISTANCE

MAG.

 SIZE
2006 HU50

May 4

3.8 LD

17

~50 m
2006 HX57

May 6

3.0 LD

16

~45 m
Comet 73P-C

May 12

31 LD

4

~1 km
2006 GY2

May 16

6.7 LD

13+

~0.8 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. See also Snow Crystals.

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.

SOHO Farside Images of the Sun from SWAN and MDI.

The Latest SOHO Coronagraph Images -- from the Naval Research Lab

Daily images from the sun -- from the Big Bear Solar Observatory

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;

Recent International Astronomical Union Circulars

GLOSSARY | SPACE WEATHER TUTORIAL

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

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