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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: 819.3 km/s
density:
2.8 protons/cm3
explanation | more data
Updated: Today at 2252 UT

X-ray Solar Flares

6-hr max:
C1 1815 UT Jun03
24-hr: C2 1055 UT Jun03
explanation | more data
Updated: Today at 2245 UT

Daily Sun: 03 Jun '03
Sunspot 376 is growing remarkably fast and could soon pose a threat for powerful flares. Image credit: SOHO/MDI

The Far Side of the Sun

This holographic image reveals one large sunspot on the far side of the Sun. Image credit: SOHO/MDI

Sunspot Number: 61
What is the sunspot number?
Updated: 02 Jun 2003

Coronal Holes:

Earth is inside a solar wind stream flowing from the indicated coronal hole. Image credit: SOHO Extreme UV Telescope.
More about coronal holes

Interplanetary Mag. Field
Btotal: 6.8 nT
Bz:
1.1 nT south
explanation | more data
Updated: Today at 2256 UT


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 2003 Jun 03 2200 UTC
FLARE 0-24 hr 24-48 hr
CLASS M 50 % 50 %
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 2003 Jun 03 2200 UTC
Mid-latitudes
0-24 hr 24-48 hr
ACTIVE 30 % 30 %
MINOR 40 % 40 %
SEVERE 10 % 10 %

High latitudes
0-24 hr 24-48 hr
ACTIVE 25 % 25 %
MINOR 45 % 45 %
SEVERE 15 % 15 %

What's Up in Space -- 3 Jun 2003
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EARTHSHINE: Step outside tonight after sunset and look west. If your skies are clear you'll see a slender crescent moon illuminated by a ghostly glow called Earthshine. Leonardo da Vinci first realized what it was: sunlight reflected from our planet onto the moon. Brad Potts of McCall, Idaho, took this picture of the moon (with Earthshine) setting over the Payette Lakes on June 1st. [sky map]

AURORA OUTLOOK: Earth is inside a high-speed solar wind stream, which sparked moderate geomagnetic activity on June 2nd. Sky watchers should remain alert for auroras on June 3rd and 4th. Probably the best observing sites will be at high latitudes: e.g., southern parts of New Zealand and Australia, northern Europe, Canada, and northern US states like Wisconsin and Michigan.

ECLIPSE MIRAGE: E. Serafini stood on the Italian coast of the Adriatic sea last Saturday morning, May 31st, and watched this remarkable sunrise. A partial solar eclipse was underway, hence the crescent shape of the rising sun. At the base of the crescent is something extra. Can you guess what it is? (continued below)

"It looks like an inferior mirage--an inverted image of the sun caused by refraction in a layer of warm air near the surface of the Adriatic sea," says atmospheric optics expert Les Cowley. Sky watchers sometimes see inferior mirages of uneclipsed suns, too, which Jules Verne famously likened to an Etruscan vase.

More images: Solar Eclipse Gallery

WEB LINKS: NOAA FORECAST | GLOSSARY | SPACE WEATHER TUTORIAL | BECOME A SUBSCRIBER | SpaceWeather PHONE



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 3 Jun 2003 there were 512 known Potentially
Hazardous Asteroids

June 2003 Earth-asteroid encounters
ASTEROID

 MISS DISTANCE

 MAG.
1998 FH12

 June 27

20 LD

 16
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.

  • LUNAR ECLIPSE: On May 15th, sky watchers from North America to Europe saw the normally-bright full moon disappear inside Earth's shadow--the first lunar eclipse of 2003. Visit our lunar eclipse gallery and see hundreds of photos from around the world.
  • LEONIDS 2002: The Leonids have come and gone, but our meteor gallery keeps growing. Check out the latest additions, which include a stunning image of 44 meteors emerging from the radiant in Leo.
  • DAWN PLANETS: Just before dawn on Sunday, Dec. 1st, the planets Venus and Mars converged and formed a lovely triangle with the slender crescent Moon. [gallery]
  • NEARBY ASTEROID: Asteroid 2002 NY40 came so close to Earth on August 18th that people could see it through binoculars or small telescopes. [gallery]
  • PERSEIDS 2002: Sky watchers spotted plenty of bright shooting stars--including some colorful earthgrazers--during the 2002 Perseid meteor shower. [gallery]
  • CRESCENT SUN: See strange shadows, weird sunsets, eclipse dogs, crescent-eyed turkeys and extraordinary rings of fire photographed during the June 10th solar eclipse. [gallery]
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.

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.

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?

Vandenberg AFB missile launch schedule.

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; Jan-Mar., 2003; Apr-Jun., 2003;

Recent International Astronomical Union Circulars

 

 

 




 

 
Editor's Note: Space weather and other forecasts that appear on this site are formulated by Dr. Tony Phillips. They are not official statements of any government agency (including NASA) nor should they be construed as guarantees of space weather or other celestial activity.

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Dr. Tony Phillips
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