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NASA finds hints of ancient Mars life in rock samples, but no proof yet.
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.
The findings, discussed in a November 20, 2025, press conference, stem from studies of Jezero Crater and Perseverance rover samples.
NASA emphasized the evidence remains unconfirmed and requires further analysis.
The announcement coincided with public speculation about comet 3I/ATLAS, which NASA confirmed is a natural comet, not an alien spacecraft.
Chinese scientists also identified eight Martian caves possibly formed by ancient water, which could harbor microbial life.
The comet will pass 269 million kilometers from Earth on December 19, 2025.
La NASA encuentra pistas de vida antigua en Marte en muestras de roca, pero aún no hay pruebas.