As astronomers delve deeper into the diversity of worlds orbiting distant stars, a new study suggests comparing populations of young exoplanets with older ones could reveal vital clues about how ...

What is the difference between a moon and a planet? Trick question! According to scientific definitions, there often isn’t much of a difference at all. That might seem counterintuitive, but it’s true.

A mysterious "rogue" planet has been observed gobbling six billion tons of gas and dust a second—an unprecedented rate that ...

A free-floating planet has been seen devouring astonishing amounts of matter, hinting that stars and planets are more alike ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. A selection of exoplanets that orbit in the habitable zone around their stars — where water can ...