Scientists are raising serious alarms about hidden threats from space that could strike Earth without warning. NASA officials ...

The object is hurtling towards the Earth at a zippy 12,616 miles per hour, according to data from the space agency.

Astronomers do not know where thousands of “city-killer” asteroids are, Nasa’s head of planetary defence has admitted.

Scientists estimate that around 15,000 medium-sized asteroids — large enough to devastate a city — remain undetected within ...

Around 15,000 mid-sized asteroids, known as 'city-killers', are unaccounted for as they zoom around space close to planet ...

Two new satellite missions will help NASA scientists better understand Earth and improve the ability to foresee environmental ...

NASA has selected two Earth science missions for development, one focused on studying the atmosphere and the other on terrestrial ecosystems and ice.

Add Yahoo as a preferred source to see more of our stories on Google. Scientists are observing an Earth-like exoplanet that may contain water using NASA's James Webb Space Telescope, the space agency ...

Two next-generation satellite missions announced Thursday will help NASA better understand Earth and improve capabilities to ...

A newly identified Earth-sized exoplanet with a year-long orbit may lie near its star’s habitable zone, but extreme cold could limit its chances of hosting liquid water.

The asteroid, around 100 feet in diameter, is speeding toward our planet at about 22,000 miles per hour, according to NASA.

Scientists are observing an Earth-like exoplanet that may contain water using NASA's James Webb Space Telescope, the space agency said in a news release. The exoplanet, known as TRAPPIST-1 e, orbits ...