A new study has proposed the existence of Planet Y, an alternative Planet Nine candidate that is smaller and closer to Earth ...

A small asteroid, called 2025 TP5, will safely fly by our planet Oct. 15 at about a quarter of the distance to the moon.

Astronomers have found new evidence, revealing the existence of an unseen and mysterious planet that could be hidden in the ...

Thirty years ago this week, two Swiss astronomers announced that they had spotted the first known planet orbiting a Sun-like ...

Rogue planet Cha 1107-7626 is swallowing gas and dust at roughly six billion tons each second, the fastest planetary growth ...

— -- Astronomers on Monday reported the discovery of an Earth-like planet outside the solar system whose size and distance from its own star put it in the "habitable" zone and make for a surface ...

Astronomers have spotted a free-floating ‘rogue’ planet, named Cha 1107-7626, that is going through a massive growth spurt, ...

“This finding by Perseverance …is the closest we have ever come to discovering life on Mars,” said acting NASA administrator ...

Space scientists look back on three decades of exoplanet discoveries—from rows of massive ‘super-Earths‘ to worlds with ...