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<<back forward>> -- News and information about meteor showers, solar flares, auroras, and near-Earth asteroids
Science news and information about the Sun-Earth environment.


Solar Wind
speed: 525.1 km/s
5.8 protons/cm3
explanation | more data
Updated: Today at 2244 UT

X-ray Solar Flares

6-hr max:
B1 2245 UT Jun06
24-hr: B1 2245 UT Jun06
explanation | more data
Updated: Today at 2245 UT

Daily Sun: 06 Jun '06

Sunspot 892 poses a slim threat for M-class solar flares.
Photo credit: Tom King of Watauga, Texas..

Sunspot Number: 23
What is the sunspot number?
Updated: 05 Jun 2006

Far Side of the Sun

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

Interplanetary Mag. Field
Btotal: 13.1 nT
0.4 nT north
explanation | more data
Updated: Today at 2246 UT

Coronal Holes:

A solar wind stream flowing from the indicated coronal hole should reach Earth on or about June 8th. Credit: GOES-12 Solar X-ray Imager


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 Jun 06 2204 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 Jun 06 2204 UTC
0-24 hr 24-48 hr
ACTIVE 40 % 35 %
MINOR 15 % 10 %
SEVERE 05 % 05 %

High latitudes
0-24 hr 24-48 hr
ACTIVE 50 % 45 %
MINOR 20 % 15 %
SEVERE 10 % 05 %

What's Up in Space -- 6 Jun 2006
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Planets. Comets. Auroras. Don't miss them! Sign up for Spaceweather PHONE.

RED JR IN PERIL? Jupiter's young red spot, Red Jr., is about to have an uncomfortably-close encounter with the oldest and biggest storm in the solar system--the Great Red Spot itself. Red Jr. won't be destroyed, but it could change color as a result of the encounter. Get the full story from Science@NASA.

ACTIVE SUN: Sunspot group 892 is growing and now poses a threat for M-class solar flares. Philippe Vercoutter of Leper, Belgium, photographed the sprawling active region yesterday:

Meanwhile, far from this impressive spot, a flame-shaped prominence has leaped into view and is dancing along the limb of the sun: image. So this is solar minimum? Apparently, any time is a good time to watch the sun.

more images: from Pascal Paquereau of Fontenay-le-Comte, Vendée, France; from Roger G. Williams of Kalamazoo, Michigan; from Francisco A. Rodríguez Ramírez on the Canary Islands;

DOUBLE FLARE: Sky watchers who've witnessed an Iridium flare rarely forget the experience. Sunlight hits a flat surface on one of the Iridium satellites and--wow!--it looks like a supernova.

Make that two supernovas: On June 5th, Laurent Laveder of Bretagne, France, spotted a pair of Iridium flares in quick succession:

The two satellites were Iridium 7 and Iridium 51, passing overhead only 2 minutes and 30 seconds apart. With a bit of judo photography, Laveder managed to capture both flares in the same image. A larger version of the image also shows Saturn, Mars and the beautifully moonlit Odet River: labeled, unlabeled.

Would you like to see an Iridium flare? Visit Heaven's Above for local predictions.

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 6 Jun 2006 there were 793 known Potentially
Hazardous Asteroids

June-July 2006 Earth-asteroid encounters




2004 DC

Jun 3

10 LD


600 m
2003 YN107

Jun 10

8.7 LD


25 m
2004 XP14

Jul 3

1.1 LD


600 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. 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

SOHO Farside Images of the Sun from SWAN and MDI.

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

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


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

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