Amateur astronomy has a long history of discovery. In fact, it wasn’t so long ago that the amateurs had a better time of it than the professionals.

In the 18th and 19th centuries, the job of professional astronomers was to calculate important information such as the times of sunset and sunrise and to provide military and merchant naval fleets with …

Read the rest of this article

Two ESA observatories have combined forces to show the Andromeda Galaxy in a new light. Herschel sees rings of star formation in this, the most detailed image of the Andromeda Galaxy ever taken at infrared wavelengths, and XMM-Newton shows dying stars shining X-rays into space.

Download: HI-RES JPEG(Size: 966 kb)

During Christmas 2010, ESA’s Herschel and XMM-Newton space observatories targeted …

Read the rest of this article


The animation above illustrates the motion of the shadow of the Moon at five minute intervals. This animation runs in a continuous loop. This graphic, by Dr. Andrew Sinclair, shows the grey penumbral shadow where the eclipse will be seen as a partial one. The UT time is shown in the upper right-hand corner of the diagram.

A partial solar …

Read the rest of this article

Big Storm on Saturn: Did you get a telescope for Christmas? If so, point it at Saturn. A giant storm even brighter than Saturn’s rings is raging through the planet’s cloudtops. Amateur images and sky maps are featured on http://spaceweather.com.

Geomagnetic Storm in Progress: At the time this post is being published (late afternoon UT on Dec. 29) a …

Read the rest of this article

The 33-year odyssey of NASA’s Voyager 1 spacecraft has reached a distant point at the edge of our solar system where there is no outward motion of solar wind.

Now hurtling toward interstellar space some 10.8 billion miles from the sun, Voyager 1 has crossed into an area where the velocity of the hot ionized gas, or plasma, emanating directly …

Read the rest of this article

On August 1, 2010, an entire hemisphere of the sun erupted. Filaments of magnetism snapped and exploded, shock waves raced across the stellar surface, billion-ton clouds of hot gas billowed into space. Astronomers knew they had witnessed something big.

It was so big, it may have shattered old ideas about solar activity.

“The August 1st event really opened our eyes,” …

Read the rest of this article


A Geminid fireball explodes over the Mojave Desert in 2009. Credit: Wally Pacholka / AstroPics.com / TWAN.

The Geminid meteor shower, which peaks this year on Dec. 13th and 14th, is the most intense meteor shower of the year. It lasts for days, is rich in fireballs, and can be seen from almost any point on Earth.

It’s also NASA …

Read the rest of this article


Geomicrobiologist Felisa Wolfe-Simon, collecting lake-bottom sediments in the shallow waters of Mono Lake in California. Wolfe-Simon cultured the arsenic-utilizing organisms from this hypersaline and highly alkaline environment. Credit: ©2010 Henry Bortman

NASA-funded astrobiology research has changed the fundamental knowledge about what comprises all known life on Earth.

Researchers conducting tests in the harsh environment of Mono Lake in California have …

Read the rest of this article

A total lunar eclipse will take place on December 21, 2010, the second eclipse of this year. This eclipse happens early in the morning (GMT) and so will only be partially visible in Europe with the Moon setting just after totality. In the USA, particularly on the West coast, the Moon will be high overhead during totality.

Totality itself lasts …

Read the rest of this article

AAVSO Alert Notice 427
Monitoring requested of the peculiar CV FS Aur
November 30, 2010

Monitoring requested of the peculiar cataclysmic variable FS Aur

Dr. Vitaly Neustroev (U. of Oulu, Finland) requests continuous, nightly monitoring of the cataclysmic variable FS Aurigae during the current (2010-2011) observing season to clearly define the start and end times of several consecutive dwarf nova …

Read the rest of this article