Astronomers have discovered a strikingly unusual exoplanet: one which orbits its host stars in a totally new way. The planet ...

Further studies are needed to determine whether K2-18b, which orbits a star 120 light-years away, is inhabited, or even ...

It is rare to find brown dwarf stars orbiting in pairs, and this pair has an even more unusual exoplanet companion ...

Why do comets and their meteoroid streams weave in and out of Earth's orbit and their orbits disperse over time? Researchers show that this is not due to the random pull of the planets, but rather the ...

Astronomers using ESO’s Very Large Telescope have discovered a truly bizarre planet — one that orbits two stars at a perfect ...

Astronomers announced Thursday that they had detected the most promising "hints" of potential life on a planet beyond our ...

The company now plans to extend into on-orbit servicing and refueling missions, end-of-mission disposal, and cross-orbit ...

BEIJING -- China has successfully established the world's first three-satellite constellation based on the Distant Retrograde ...

A powerful new observatory is the best hope yet for finding the elusive Planet 9, a large planet that some scientists say is ...

The first four humans to orbit Earth’s poles are sharing their experiences from their historic mission. In a discussion with ...