Avi Loeb, the Harvard theoretical physicist who has drawn attention for suggesting comet 3I/ATLAS may be alien-made, is sharing a new thought: The interstellar object could be nuclear-powered, based ...

A Harvard scientist has suggested a 'hostile' object coming at us on Earth is an advanced 'mothership' after a warning was ...

Astronomers have spotted only three objects known to have come from outside our solar system. The newest, called 3I/ATLAS, is already raising eyebrows. First seen this summer, it doesn’t quite behave ...

A mystery object tearing towards Earth at break-neck speed has raised fears that aliens are on their way here.

He said images from the Hubble Space Telescope show a glow in front of the object, but no tail behind it. Usually, comets ...