A mysterious tripod-like object captured by NASA's Curiosity rover on Mars has sparked debate about extraterrestrial life, though experts suggest it may be a camera artefact.
An unusual snapshot taken by NASA's Curiosity rover has ignited wild online theories that Mars was once a battlefield for an apocalyptic extraterrestrial war. Self-proclaimed UFO hunter Scott C Waring ...
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NASA explains the spooky 'negative-space jellyfish' hovering over Mars in new Curiosity rover image
NASA has moved to explain a decades old lunar photograph that some UFO enthusiasts claim shows a 3.4-mile-long alien ...
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