Interstellar Comet 3I/ATLAS: Ice Volcanoes, Life’s Building Blocks and the December 19 Flyby — Latest Updates as of December 8, 2025
Interstellar comet 3I/ATLAS is showing cryovolcano-like eruptions and an atmosphere rich in prebiotic molecules, according to new observations released ahead of its December 19, 2025, close approach to Earth. NASA and ESA images reveal active jets and high levels of methanol and hydrogen cyanide. The comet will remain at least 1.8 AU from Earth and poses no impact threat. Online rumors about aliens and health effects have circulated.