The sheer number of objects suggests scientists will soon have to grapple with what counts as a moon versus what’s just a ...

A space probe named Hera captured images of Mars' small Deimos moon while on a mission to examine an asteroid.

Is it a plane? No, it's super Neptune! But this Superman-mimicking planet is not blasting through space on its own. It is being dragged along by its parent star. NASA scientists have discovered ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. An illustration of a Neptune-like planet being dragged through space by its parent star along ...