The opening scenes of Noah Hawley's "Alien: Earth" reveal that humankind will attempt to achieve immortality through these methods: cybernetically enhanced humans, artificial intelligence, and synthetic beings downloaded with human consciousnesses.

A new paper suggests that BARSOOM may have been alive on the planet, and was killed in the Viking experiments.

For more than six decades, astronomers have listened for possible signals from extraterrestrial civilisations, with no confirmed detection to date. A .