A small group of distant worlds may hold the clues to life beyond Earth. Astronomers searching for life beyond Earth have narrowed down the most promising places to look. Out of more than 6,000 known ...

Project Hail Mary's alien Rocky holds the Ryan Gosling movie together.

Our solar system is way more bizarre and dynamic than what our school textbooks taught us. From Venus being super hot to ...

What began as a headline-grabbing stunt has turned into one of the strangest objects orbiting the Sun. Years after launch, Elon Musk’s Tesla Roadster is still travelling through space, far from home.

Scientists have uncovered the oldest direct evidence yet that Earth’s tectonic plates were on the move 3.5 billion years ago. By analyzing magnetic fingerprints in ancient rocks, they reconstructed ...

Extreme exomoons with tidal heating and thick, hydrogen-rich atmospheres may be able to create billions of years of potentially habitable surface conditions.

Provided they host thick, hydrogen-dominated atmospheres, moons orbiting free-floating exoplanets could retain much of the heat generated deep within their interiors by tidal forces. Led by David ...

A rare star reveals how the Universe's first stars exploded, helping explain the Milky Way’s outer halo and its unusual chemistry.