Science

Published findings about life elsewhere, written for people who never studied astrophysics. Every entry says what the result does not establish, because that is usually the part the headlines drop.

These entries are not sightings. They are published or officially announced findings, and their label reflects how settled the science is, not whether we believe it.

Topic

All Exoplanets1 Astrobiology and biosignatures1 Interstellar objects1 Space signals1

1 entry

DisputedAstrobiology and biosignatures

A possible sign of life on a distant planet did not survive closer scrutiny

A team reported a gas on the planet K2-18b that on Earth is made almost entirely by living things. Several independent reanalyses of the same data found the signal was not strong enough to claim.

University of Cambridge · NASA