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3I/ATLAS Comet's Close Mars Flyby Yields Key Data

11/24/2025

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Summary

Story summary

In October 2025, the interstellar object 3I/ATLAS made a close Mars flyby, within 30 million kilometers.
NASA, ESA, and CNSA captured images of the comet.
NASA's MAVEN spacecraft provided significant data on the object's chemical composition.
MAVEN observed 3I/ATLAS for ten days, detecting hydrogen and hydroxyl gas.
It will approach Earth on December 19, 2025, at 2 AUs, posing no threat.

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Story summary

In October 2025, the interstellar object 3I/ATLAS made a close Mars flyby, within 30 million kilometers.
NASA, ESA, and CNSA captured images of the comet.
NASA's MAVEN spacecraft provided significant data on the object's chemical composition.
MAVEN observed 3I/ATLAS for ten days, detecting hydrogen and hydroxyl gas.
It will approach Earth on December 19, 2025, at 2 AUs, posing no threat.