Hubble's latest images of interstellar comet 3I/ATLAS reveal sustained, jet-like eruptions and a carbon dioxide-rich coma ...
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Alien probe or ancient ice? The enigma of 3I/ATLAS

This is not the first time that a comet is accusing it of being a spy. However, 3I/ATLAS, which was introduced on July 1, ...
Mars has never looked more like a planet built for hiding secrets. A cluster of eight vast, water-carved caves appears almost engineered to shield fragile chemistry, or even biology, from the brutal ...