Earth may have a moon today because a nearby neighbor once crashed into us, a new analysis of Apollo samples and terrestrial ...

Our planet’s magnetosphere has seen dramatic shifts across its history—even total reversals—but this recent wrinkle doesn’t ...

New James Webb telescope observations of the 'super-puff' planet WASP-107b show that the exoplanet's runaway atmosphere is ...

Earth may not have to look quite so far for its moon because when our young planet was in a catastrophic collision with a ...

Located about 39 light-years from Earth, the TRAPPIST system resembles a miniature version of our solar system: The star, an ...

Scientists have detected tiny lightning bolts on Mars for the first time — they were found discharging around NASA's ...

A distant exoplanet called WASP-107b was observed by NASA’s James Webb, which revealed a giant cloud of helium gas ...

An Australian startup wants to recycle a geostationary satellite to get an up-close look at the "doomsday" asteroid Apophis.

The picture-perfect launch of twin Escapade orbiters bound for Mars presages a fantastical new age in exploring the planets, ...

Early this year, a surprise space rock made headlines around the globe when the International Asteroid Warning Network ...

Scientists use the habitable zone to find planets that could host liquid water and life. Learn how planetary atmospheres and geology determine true habitability beyond Earth.