Add Yahoo as a preferred source to see more of our stories on Google. Mundane wayward space snowball, or extraterrestrial visitor? Astronomers believe that our solar system's latest and only third ...

There’s no denying the allure of alien artifacts. Science fiction is awash in the material remnants of extraterrestrial civilizations, which surface in everything from the classic books of Arthur C.

Scientists are sharpening the methods used to search for alien artifacts inside our own solar system, drawing on recent peer-reviewed studies published in The Publications of the Astronomy Society of ...

Astronomers are adopting new strategies in the search for extraterrestrial intelligence. A study in Monthly Notices of the Royal Astronomical Society suggests using Earth’s shadow to detect alien ...

Avi Loeb is no stranger to controversy. The prolific Harvard University astrophysicist has produced pioneering and provocative research on black holes, gamma-ray bursts, the early universe and other ...

In 2014 a fireball from outer space was posited to be an alien artifact. A recent study suggests otherwise. By Matt Richtel In January of 2014, a meteor fell from space off the coast of Papua New ...