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.

JWST found a carbon-atmosphere planet orbiting a pulsar, challenging current models of how planets form. Scientific progress often comes from data that don’t fit our current understanding. This idea, ...