Hycean worlds, which are a possible kind of exoplanet with deep oceans surrounded by a thick envelope of hydrogen, could ...

In addition, researchers think the world can have significant quantities of diamonds, making planetary composition ...

The U.S. military's classified mini space shuttle has returned to Earth after circling the world for 434 days.

Private space company Galactic Energy could debut the world's first electromagnetic rocket launch pad by 2028.

Wilmore and Williams' situation caught the world's attention, with the horror movie plot of two people "stranded" in space with no idea of when they would be returning. The question of when they ...

She reports on China and its interactions with the world as it seeks to rise to global ... influence in Latin America and its ambitions in space, the Chilean government is reviewing an agreement ...

A SpaceX capsule delivered four astronauts to the International Space Station (ISS) early Sunday in a NASA crew-swap mission that will allow a pair of stuck astronauts, Butch Wilmore and Suni ...

Stuck in space no more, Nasa astronauts Butch Wilmore and Suni Williams returned to Earth on Tuesday, hitching a different ride home to end a saga that began with a bungled test flight more than ...

And Russian cosmonauts hold the worldwide records for both consecutive and cumulative days in space. Russian cosmonaut Valery Polyakov set the world record for the longest single spaceflight in ...