Space, Earth | featured news

The atmosphere of a relatively nearby extrasolar planet - just three times bigger than Earth - has been measured in a pioneering experiment.

A small asteroid passed within the moon's distance from the Earth on Wednesday morning, and another will do likewise later in the day, space watchers say.

Earth braces for cosmic tsunami Tuesday night as tons of plasma from massive solar flare heads directly toward the planet ...

A rare sun-like star that is both young and relatively close to Earth has been found to be harboring an even weirder object - a failed star locked in a close orbit around its host, according to a new study.

Scientists celebrated Sunday after finding more than 700 suspected new planets -- including up to 140 similar in size to Earth -- in just six weeks of using a powerful new space observatory.

Saturn's largest moon, Titan possesses an ammonia and methane atmosphere that obscures its frozen surface from view. Since a 1980 Voyager I flyby, ...

A journey from Earth to Mars could soon take just 39 days -- cutting current travel time nearly six times -- according to a rocket scientist who has the ear of the US space agency.

Astronauts are taking in "absolutely spectacular" views of Earth as they crank open shutters inside the International Space Station's new $27 million observation deck....

Russia's space chief said Wednesday his agency will consider sending a spacecraft to a large asteroid to knock it off its path and prevent a possible collision with Earth.

Astronomers announced this week they found a water-rich and relatively nearby planet that's similar in size to Earth.