It starts with a signal. Faint, strange, and unlike anything humanity has ever recorded. Within hours, it escalates into an event that changes the course of history as an alien arrival on Earth ...

Humans should look to planetary alignments outside of the solar system when searching for signatures of extraterrestrial communications, scientists say. The nascent search for radio transmissions from ...

Interstellar comet 3I/ATLAS has become famous than most celebrities as it makes its way through our solar system. Although astronomers have been studying this rare visitor since its discovery in July, ...

The truth is out there — and late President George H.W. Bush apparently knew it — telling a federal official that an alien made contact with humans at a secretive New Mexico air base in 1964, ...