3I/ATLAS Accelerates on Its Own — Avi Loeb Says an 'Engine' Can't Be Ruled Out

Unexplained Acceleration of 3I/ATLAS

Astronomers have detected an unexplained acceleration in the interstellar object 3I/ATLAS, sparking interest and debate in the astronomy community.

According to recent measurements, 3I/ATLAS is showing a slight but measurable acceleration that does not align with standard models of comet behavior.

Avi Loeb, a Harvard astrophysicist, suggests that although a natural cause is the most likely explanation, the data do not yet rule out the possibility of a technological one, such as a form of internal propulsion.

Author's summary: Astronomers detect unexplained acceleration in 3I/ATLAS.

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International Business Times International Business Times — 2025-10-31