In a spectacular cosmic event, Earth is about to get a "second moon" this fall. An asteroid passing through the Earth will be ...

Any day now, our night sky will host a guest star.

A new mini-moon the size of a city bus will begin circling our planet and hanging out in our skies until Thanksgiving week.

In a monumental achievement, astronomers using the European Southern Observatory’s VISTA telescope have created the most comprehensive infrared map of the Milky Way, featuring over 1.5 billion cosmic ...

Polar bears aren't white, strawberries aren't berries, and the Earth isn't round—we'll have you rethinking everything you ...