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.

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 ...