From mudstones on Mars to strange gases in exoplanet atmospheres, tentative evidence for extraterrestrial life is starting to ...

May the faint chemical signals drifting through the atmosphere of a distant world be the long-sought message that we are not alone. Astronomers have reported seeing an unusual and strong combination ...

From Viking to Perseverance, scientists have spent decades chasing chemical hints that could point to life beyond Earth.

A man in Panama claims he's found a meteorite with an "alien life" form growing on it and said he has the video to prove it. While critics argue it's an elaborate hoax, some scientists say that it is ...

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As far as underwhelming headlines go: "No Alien Life Found on Comet" must rank very close to the top. An article with this title appeared in the Guardian on July 6 in response to a story claiming that ...