Europa has a vast, saltwater ocean beneath its icy shell, with more than twice the amount of water in all of Earth’s oceans ...

From mudstones on Mars to strange gases in exoplanet atmospheres, tentative evidence for extraterrestrial life is starting to ...

The liquid ocean on Jupiter’s moon Europa appears to be completely sealed off from the planet’s surface, which may reduce the ...

On the frozen surface of Jupiter’s moon Europa, a strange, star-shaped scar has become an unlikely focal point in the search ...

NASA’s Europa Clipper mission is set to investigate Jupiter’s icy moon for signs of a vast subsurface ocean and the chemical ...

A new study reveals the likely origin of a mysterious spider-like pattern first spotted on Jupiter's moon Europa in 1998. The finding could have implications for a NASA spacecraft en route to the ...

NASA's alien-hunting Europa Clipper spacecraft took seven hours of ultraviolet observations of interstellar comet 3I/ATLAS while both objects zoom toward Jupiter.

Harvard scientist Avi Loeb presents chilling theories that interstellar object 3I/ATLAS is alien technology, citing anomalies ...

3I/ATLAS came within 168 million miles of Earth around midnight CST Friday. While that might seem pretty far away, the ...

An eye-catching pattern on the surface of Europa, an ice-covered moon, may have profound implications for our understanding of the Jovian satellite.

In 2025, astronomers sharpened their view of the planetary system around Proxima Centauri — the sun's closest stellar ...

The potential for sending payloads and people to Mars is therefore becoming plausible in a way that it never has before. Mars ...