If you're in the mood to dwell in nature and explore some of the world's most fascinating creatures, consider spending a day ...

The Outer Limits still feels remarkably modern, with eerie sci-fi stories that inspired generations of genre television.

The exoplanet telescope TESS revealed a distant world using an entirely different detection method than the one it was built ...

Learn how slow-moving mantle waves inside Earth may have lifted Antarctica’s ancient mountains, creating cold highlands where ...

That’s no moon. It’s a space station. The enormous, planet-killing kind, designed for only one thing, to bring order to the ...

"This is the first time that we've been able to predict in human history an asteroid visibly passing by the Earth." ...

The Earth is four and a half billion years old, so why they started appearing then is unknown, as is the mechanism to make ...

Two faint objects hiding in archival infrared sky maps now sit at the center of a growing scientific argument about whether a ...

A three-armed spacecraft rocketed into orbit Friday to rescue a NASA telescope that's in danger of crashing back to Earth.

A first-of-its-kind mission launched Friday in the hopes of preventing NASA’s Swift Observatory from dropping out of ...

Celebrating America's 250th birthday, Space.com looks back at what our understanding of space was like in 1776 and what major ...