As interstellar object 3I/ATLAS swept past Earth on 19 December 2025, viral theories claimed cosmic indifference or alien ...

The newest visitor from deep space, interstellar comet 3I/ATLAS, has arrived with a literal pulse that is stirring up talk of alien engineering as much as it is exciting astronomers. As its brightness ...

NASA has confirmed that 31/ATLAS is a comet and not an alien spacecraft, as some had believed. But it did lead one scientist to map out what could happen if we one day encounter aliens ...