In doing so, they found this orphan is within the same weight class as Saturn, strengthening the case that the galaxy teems ...

Rogue planets — worlds that drift through space alone without a star — largely remain a mystery to scientists. Now, ...

As this interstellar object approached its closest point to Earth, a massive radio telescope attempted to sniff out a ...

Most of the planets we’ve identified are in orbit around stars and formed from the disks of gas and dust that surrounded the ...