A scorching, airless world just 48 light-years away is offering scientists a rare glimpse into the geology of distant planets ...

New research suggests that many planets previously considered promising for life may, in fact, be far less hospitable. A ...

The live event will take audiences on an extraordinary journey through a century of exploration and discovery in the natural ...

Planet Earth is spinning a little faster today — resulting in one of the shortest days of the year. But the change will be so minuscule you won’t even notice. We’re talking even less time than the ...

A forgotten signal found by citizen scientists could be a habitable Earth-like planet. Here’s how astronomers tracked it down ...

Astronauts and robotic spacecraft have captured breathtaking photos of Earth from space for decades. See the best images.

A rocky planet nearly 50 light-years away appears to be airless, dark, and covered in volcanic or weathered rock, according ...