Our Solar System is home to many unique planetary bodies, including protoplanets and dwarf planets. Here are the unique traits that differentiate the two.

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 ...

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.

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 ...