
Harvard astrophysicist Avi Loeb has dismissed tech billionaire Elon Musk's claim that the mysterious interstellar object 'Oumuamua may be made of nickel, arguing that 'there is no observational evidence to support it.'
The exchange has reignited global interest in the origins of such cosmic visitors, coinciding with the discovery of 3I/ATLAS (C/2025 L1), a new interstellar object exhibiting puzzling, non-gravitational acceleration similar to 'Oumuamua.