A polarizing Harvard astronomer known for splashy theories about alien visits has been tapped by the White House to lead a ...

Grain-sized remnants of alien technology may get caught in solar wind and land on plants and moons close to us ...

The moment of first contact with extraterrestrials is a staple of science fiction. It usually involves a frantic scientist having a Eureka moment, realising in a single dramatic instant that Earth is ...

SETI researchers found no alien signals on interstellar object 3I/ATLAS, but the study refines future searches and expands ...