Hints of ancient microbes in Martian rocks and a revived theory about our cosmic ancestry are forcing scientists to rethink ...

The True Story of an Alien Craze that Captured Turn of the Century America," David Baron looked into one source of that ...

The Perseverance rover has been exploring Jezero Crater for years, but it's never found an otherworldly object quite like ...

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An alien doorway on Mars, as captured by Mast Camera (Mastcam) onboard NASA's Mars rover Curiosity on Sol 3466 (image courtesy NASA) Scientists and David Bowie have all famously wondered if there is ...