Harvard Astrophysicist Avi Loeb Suggests Interstellar Object 3I/ATLAS Could Contain Antimatter, ‘The Most Efficient Fuel’

Harvard Astrophysicist Avi Loeb's Theory on Interstellar Object 3I/ATLAS

Avi Loeb, a Harvard astrophysicist, has suggested that the interstellar object 3I/ATLAS could be composed of antimatter, a form of material that releases nearly total energy on contact with ordinary matter.

Loeb described antimatter as

"the most efficient fuel" in the universe
and argued that its interaction with solar particles could account for the object's unusual brightness and apparent acceleration.

Author's summary: Avi Loeb proposes antimatter composition for 3I/ATLAS.

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Business Times Business Times — 2025-11-03