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 ...

Learn why a lichen found in the Mojave Desert has become key evidence in the search for extraterrestrial life.

Former NASA official Joseph Gutheinz dismisses the notion of alien visitors, urging people to focus on scientific evidence rather than speculation. He argues that vast astronomical distances and the ...

The search for extraterrestrial life has long gone back and forth between scientific curiosity, public fascination and outright scepticism. Recently, scientists claimed the “strongest evidence” of ...

Astrobiologists thought they saw indications of water vapour. Claims of alien life have popped up throughout the years. Picture: iStock Upon revision, this later turned out to be methane.

But those yearning for credible evidence of alien lifeforms may be in luck, as researchers from the University of Cambridge's Institute of Astronomy claim to have found the most compelling ...

But so far, no solid evidence of life has ever been found beyond the Earth. A paper published in April 2025 claimed to detect a signature of life in the atmosphere of the planet K2-18 b.

A detection of life would be a remarkable development. The astronomer Carl Sagan used the phrase, "Extraordinary claims require extraordinary evidence," in regard to searching for alien life.