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flag NASA finds hints of ancient Mars life in rock samples, but no proof yet.

flag NASA has reported potential signs of ancient life on Mars based on data from robotic missions, including organic molecules and possible biosignatures in ancient rocks, though no definitive proof has been found. flag The findings, discussed in a November 20, 2025, press conference, stem from studies of Jezero Crater and Perseverance rover samples. flag NASA emphasized the evidence remains unconfirmed and requires further analysis. flag The announcement coincided with public speculation about comet 3I/ATLAS, which NASA confirmed is a natural comet, not an alien spacecraft. flag Chinese scientists also identified eight Martian caves possibly formed by ancient water, which could harbor microbial life. flag The comet will pass 269 million kilometers from Earth on December 19, 2025.

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