Billions of years ago, another planet smashed into Earth. An event of this epicness could have created our Moon. It also ...

In a great year for premium TV, the standout theme was the re-emergence of the science fiction genre with shows that were ...

Researchers have confirmed the mass of a free-floating planet thanks to a lucky convergence of ground- and space-based ...

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