From Viking to Perseverance, scientists have spent decades chasing chemical hints that could point to life beyond Earth.

A new discovery beneath the Bermuda Triangle has added another layer to the mystery surrounding the region, known for its unexplained ship and aircraft disappearances. Scientists have found a massive ...

The Manhattan-sized interstellar visitor hurtling through space has captured the imaginations of UFO watchers for months and ...

Learn about the 3I/ATLAS mystery as Harvard's Avi Loeb reveals 'wobbling jets' that could suggest the interstellar visitor is ...

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

With 3I/ATLAS streaking away from our planet, speculation remains as to whether the interstellar comet is alien or not.

Think you know your Dyson spheres from your dark blobs? This cosmic crossword dives into the strangest, most mind-bending structures ever spotted — or imagined — in the universe.

Long before scientists discovered that other stars in the universe host their own planetary systems, humanity had ...

The search for intelligent life in our galaxy is shifting from abstract speculation to detailed cartography, as researchers try to sketch where alien societies might arise, thrive and vanish inside ...

Big sci-fi adaptations are suddenly everywhere again. Every few years, Hollywood remembers just how good sci-fi novels really ...

Octopuses have a way of making familiar rules feel optional. They live on Earth but behave like visitors with a different ...