Are we alone in the universe? Consider mysterious "extraterrestrial" radio signals. Unexplained gases on other planets.

Could humans spread Earth life beyond our planet? Astrobiologists explain where extremophiles might survive and why the risks ...

Thus far, our search for extraterrestrial life points toward Clarke’s former point, suggesting that our little blue dot is ...

The Cluster is a form of life organized on principles so different from anything on Earth that understanding it requires ...

In a new paper, researchers examine the possibility of other consciousnesses that take on forms far beyond our imagination.

There’s no data to suggest that aliens exist. However, if we believed they existed and came to Earth, our planet would offer ...

Octopuses, bees, and dogs all process information differently. Even within the narrow confines of one planet, evolution produced a wide range of nervous systems rather than a single design. A new ...

Scientists are raising concerns that we may be overlooking evidence of extraterrestrial life even when it is present. Hidden ...

Astronomers studying the interstellar comet 3I/ATLAS say it could be a 12‑billion‑year‑old relic formed in near‑absolute‑zero conditions, while Nasa dismisses claims it is an alien probe.

A biologist specializing in invasive species has partnered with a former Pentagon strategist in pushing NASA to construct a “lunar biocontainment facility.” Reading time 3 minutes International ...

Harvard astrophysicist Avi Loeb has floated the provocative idea that humans might themselves be alien‑made 'autonomous probes,' built through advanced synthetic biology rather than evolving entirely ...

Left to Right: Steven Yeun in "Nope," the alien in Steven Spielberg's "E.T." and Scarlett Johansson in "Under the Skin" (Universal Pictures / A24) It didn’t take long for stories about ...