Ring of fire eclipse on May 9-10, 2013

Those in the Australian outback and parts of the Pacific Ocean will be able to view an annular solar eclipse. Elsewhere ... a partial eclipse.

Possible first fragments of 1908 Tunguska meteorite

These river stones might be fragments of the meteor that exploded over Russia on June 30, 1908.

Sun produced strong flare on May 3, 2013

The sun produced a strong solar flare on May 3, 2013. No ill effects on or near Earth are expected, but it did produce some beautiful images.

Record-setting blast of gamma rays from a dying star

A shockingly, eye-wateringly bright gamma ray burst from a galaxy 3.6 billion light-years away.

Telling time on Saturn

Undergraduate student shows how planet's magnetosphere changes with the seasons.

An anarchic region of star formation

The Danish 1.54-metre telescope has captured a striking image of NGC 6559, an object that showcases the anarchy that reigns when stars form inside an interstellar cloud.

NASA invites public to send names and messages to Mars

NASA is inviting the public to submit their names and a personal message for a DVD to be carried aboard a spacecraft that will study the Martian upper atmosphere.

Video: The day NASA’s Fermi dodged a 1.5-ton bullet

NASA scientists don't often learn that their spacecraft is at risk of crashing into another satellite. However, Fermi was just one week away from an unusually close encounter with Cosmos 1805, a defunct spy satellite dating back to the Cold War.

How Saturn keeps itself looking young and hot

New research has revealed how Saturn keeps itself looking young and hot while other planets become darker and cooler as they age.

Deep, detailed image of distant universe

Astronomers have for the first time identified discrete sources that account for nearly all the radio waves coming from distant galaxies.