Sunrises and sunsets often dazzle, but they'll have a special ring to them in a few days for people in the western United States and eastern Asia: The moon will slide across the sun, blocking everything but a blazing halo of light.

The western United States and eastern Asia will be treated this weekend to a rare solar spectacle when the moon slides across the sun, creating a "ring of fire."

A new private supply ship for the International Space Station remained stuck on the ground Saturday after rocket engine trouble led to a last-second abort of the historic flight.

And the heat goes on. Forecasters predict toasty temperatures will stretch through the summer in the U.S. And that's a bad sign for wildfires in the West.

After 50 years of searching, physicists have spotted the fingerprint of radioactive plutonium, revealing the secrets of this complex molecule behind nuclear weapons.

People in the western United States, Pacific and parts of Asia will have the chance to see a partial solar eclipse on Sunday (May 20). While it may be tempting to brush off warnings against looking up at this eclipse bare-eyed, don't: The light of an eclipse really can damage your eyes ? though warnings of total blindness are likely overstated.

The origin of a rare tyrannosaur skeleton, now sitting mounted and prepared at an auction house in New York City, has been questioned, with some saying the specimen is from Mongolia; if so, that would mean it entered the United States illegally.

CAPE CANAVERAL, Fla. ? SpaceX engineers have replaced a faulty engine valve on a private rocket carrying the first commercial space capsule bound for the International Space Station following the last-second abort during an attempted liftoff Saturday (May 19).

Skywatchers from China to Texas are in for a rare celestial treat today when the moon blots out most of the sun to create dazzling "ring of fire" solar eclipse.

A Malaysian researcher known for finding new amphibian species said Friday his team had discovered at least one new species of frog in studies he said highlight Borneo's rich biodiversity.

In this weekly series, Life's Little Mysteries rates the plausibility of popular science fiction concepts.

(Reuters) - Human Genome Sciences Inc said on Thursday it adopted a stockholder rights plan as the biotechnology company defends itself against a $2.6 billion (1.6 billion pounds) hostile takeover bid by drug maker GlaxoSmithKline Plc . Human Genome said its board determined the $13-a-share bid by the British drug maker was inadequate and undervalued the company and it recommended stockholders not tender their shares. Glaxo, however, said it plans to proceed with its tender offer and restated its preference to complete the acquisition on a friendly basis. ...

The first private spacecraft ever to launch toward the International Space Station will be carrying a host of student science experiments when it blasts off Saturday (May 19), including projects looking at spiders in space and how microgravity affects wine.