A mysterious visitor from another solar system could be an alien spacecraft, according to a leading Harvard astronomer.

There could be life out there—way, way out there. Last Wednesday, NASA announced that its James Webb Space Telescope had discovered “compelling evidence” of a planet that is potentially habitable. The ...

The Black Knight satellite myth claims that a mysterious object—possibly of alien origin—has been orbiting Earth for 13,000 years. This theory combines a mix of unrelated events, including Nikola ...

The skepticism and debate around the question of "are we alone in the universe" makes the field of astrobiology more cautious ...

NASA’s clean-rooms are meant to be the surgical suites of spaceflight—over-pressurised, HEPA-filtered boxes where not even a stray eyelash should survive. Yet ...

A type of lichen was able to survive extreme UV radiation in the lab, suggesting that ozone protection might not be required for life on exoplanets.

In this week’s episode of Space Minds David Ariosto sits down Nathalie Cabrol, Director of the Carl Sagan Center at the SETI ...

Stories about the existence of aliens, and our chances of detecting them, tend to be positive. We are told that we might ...