New images released by the European Space Agency picture a shadowy presence spreading across the surface of Mars.

And yet, in just 50 years, we've noticed some pretty big changes happening on Utopia Planitia, which was possibly once part ...

Scientists have discovered unexpected water-ice clouds on a distant, Jupiter-like exoplanet, challenging current atmospheric ...

Thousands of feet below the surface, the Antarctic seafloor is a time machine to another realm. Here’s how one scientist ...

NASA's Mars Curiosity rover has uncovered never-before-seen organic compounds that could be the most convincing evidence yet ...

A throwaway line about Vulcan sparked decades of debate, until one clever theory finally made it official canon.

Scientists reveal how waves behave on alien planets, from towering methane seas on Titan to nearly still lava oceans on ...

A new study suggests alien life may be easier to detect through clusters of similar planets rather than single biosignatures.

Aristotle's views on the nature of the cosmos dominated the Ancient Greek world. He argued that there's only one world, at ...

Invincible Season 4 Episode 7 is an exhilarating penultimate hour that perfectly sets up what is sure to be an explosive ...

"It really bent your mind." The Artemis astronauts’ reflections echo a long described change that occurs when humans are ...