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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: 452.6 km/s
density:
1.0 protons/cm3
explanation | more data
Updated: Today at 2245 UT


X-ray Solar Flares

6-hr max:
C1 1910 UT Jun07
24-hr: C2 1340 UT Jun07
explanation | more data
Updated: Today at 2245 UT

Daily Sun: 07 Jun '05

None of these sunspots pose a threat for strong solar flares. Credit: SOHO/MDI


Sunspot Number: 89
What is the sunspot number?
Updated: 06 Jun 2005

Far Side of the Sun

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

Interplanetary Mag. Field
Btotal: 3.6 nT
Bz:
3 nT south
explanation | more data
Updated: Today at 2247 UT

Coronal Holes:

Earth is exiting a solar wind stream flowing from the indicated coronal hole. Image credit: SOHO Extreme Ultraviolet 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 2005 Jun 06 2204 UTC
FLARE 0-24 hr 24-48 hr
CLASS M 20 % 20 %
CLASS X 05 % 05 %

Geomagnetic Storms: Probabilities for significant disturbances in Earth's magnetic field are given for three activity levels: active, minor storm, severe storm
Updated at 2005 Jun 06 2204 UTC
Mid-latitudes
0-24 hr 24-48 hr
ACTIVE 25 % 20 %
MINOR 15 % 10 %
SEVERE 05 % 05 %

High latitudes
0-24 hr 24-48 hr
ACTIVE 30 % 25 %
MINOR 15 % 10 %
SEVERE 05 % 05 %

What's Up in Space -- 7 Jun 2005
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DAYTIME METEORS: The annual Arietid meteor shower peaks this week on June 7th and 8th. It's a strong shower, but the meteors are difficult to see because the sun is up when the shower is most intense. The Arietids are a rare daytime meteor shower. [more]

Did you miss the aurora storms of May? Next time get a wake-up call: Sign up for SpaceWeather PHONE.

VENUS RETURNS: Have you noticed, lately, a bright pinpoint of light beaming through the rosy glow of sunset? That's Venus, returning to the evening sky after an absence of more than a year.

You can see Venus any evening this month. Wednesday, June 8th, is an especially good evening to look. The slender crescent Moon will be gliding by Venus. The pair are so bright, they pop into view even before the sky grows completely dark. [sky map]

Above: Can you find Venus in this picture? It's the light seemingly fixed atop one of the boat's masts. "This may be the only way for such a bright object to go unremarked," says photographer Laurent Laveder of Île-Tudy, Bretagne, France. "I do love this bright light in the twilight."

SOLAR ACTIVITY: The sun is a busy place today. Our star is peppered with 'spots, criss-crossed by dark filaments, and the limb of the sun is alive with arcing prominences. All of these things appear in the June 6th photo, below, from Gary Palmer of Los Angeles.

Despite all this activity, the chance of a strong solar flare remains low. None of today's sunspots have the sort of tangled, unstable magnetic fields that tend to explode.



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 are on a collision course with our planet, although astronomers are finding new ones all the time.

On 7 Jun 2005 there were 696 known Potentially
Hazardous Asteroids

May-July 2005 Earth-asteroid encounters
ASTEROID

 DATE (UT)

 MISS DISTANCE

 MAG.
2005 JT1

May 11

6.9 LD

 19
2005 ED318

May 23

6.3 LD

 14
2000 AG6

July 22

8.7 LD

 20
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

The Sun from Earth -- daily images of our star 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.

Aurora Forecast --from the University of Alaska's Geophysical Institute

Daily Solar Flare and Sunspot Data -- from the NOAA Space Environment Center.

Lists of Coronal Mass Ejections -- from 1998 to 2001

What is an Iridium flare? See also Photographing Satellites by Brian Webb.

What is an Astronomical Unit, or AU?

Mirages: Mirages in Finland; An Introduction to Mirages;

NOAA Solar Flare and Sunspot Data: 1999; 2000; 2001; 2002; 2003; 2004; Jan-Mar., 2005;

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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