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A volcano beneath the Red Sea has given Earth a New Year's gift: a new island about 40 miles (60 kilometers) off the coast of Yemen. The currently unnamed landmass first appeared in NASA satellite photos taken on December 23.

For the first time, a death-diving comet has been observed as it vaporized in the sun's atmosphere, thanks to new data from a NASA satellite. More than a thousand known comets are so-called Kreutz sungrazers, a family of icy bodies that pass very near to the sun's surface on t …

Minuscule amounts of ethanol, the type of alcohol found in alcoholic beverages, can more than double the life span of a tiny worm known as Caenorhabditis elegans, which is used frequently as a model in aging studies, UCLA biochemists report.

After circling Earth for more than two months, the failed Russian Mars probe Phobos-Grunt will make a kamikaze dive into Earth's atmosphere sometime around Sunday, experts say. The Russian space agency, Roscosmos, which has given up hope of recovering the spacecraft, is now co …

A tiny, freshwater flatworm found in ponds and rivers around the world that has long intrigued scientists for its remarkable ability to regenerate has now added a new wrinkle to biology. Reporting in the journal Science today, researchers at the University of California, San F …

Scientists have uncovered a lot about the Earth's greatest extinction event that took place 250 million years ago when rapid climate change wiped out nearly all marine species and a majority of those on land.

Objects in the Kuiper belt are small and far away thus difficult to study in detail even with the best telescopes available at earth.