Pulverised technology from collapsed alien civilisations may lie scattered across the solar system, including on the Moon, a new study suggests. The likelihood of advanced aliens living at the same ...

A strange interstellar comet discovered last year and speculated by a prominent astronomer to be an alien spacecraft could be older than our Solar System, according to a new study. The comet, first ...

The next major search for extraterrestrial intelligence might involve putting Moon dust under a microscope rather than pointing a radio telescope toward the stars. A new study led by SETI Institute ...

If ancient alien explorers ever traipsed through Earth's cosmic neighborhood, could it be possible they left behind some ...