From Viking to Perseverance, scientists have spent decades chasing chemical hints that could point to life beyond Earth.
From mudstones on Mars to strange gases in exoplanet atmospheres, tentative evidence for extraterrestrial life is starting to ...
A new book details the turn-of-the-century Mars craze It’s not aliens. It’s never aliens. Claims of extraterrestrial life are so common that experts now have this cheeky retort at the ready. In The ...
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