If ancient alien explorers ever traipsed through Earth's cosmic neighborhood, could it be possible they left behind some interstellar litter on the moon?

If the Milky Way ever hosted a star-faring civilization, its most durable monument may not be a beacon, a ruined spacecraft or a city-size machine. It may be dust. A team of researchers argues that ...

A viral alien base on the Moon claim rests on a March 2026 preprint that has not been peer reviewed or independently confirmed. The paper says high-speed telescope footage captured more than 20 ...

Scientists are calling for a lunar quarantine facility where samples from Mars, the Moon, and beyond would be examined before being brought to Earth. They warn that even a tiny alien microorganism ...

Most of our experience with the Search for Extraterrestrial Intelligence (SETI) has focused on capturing radio signals that alien species have sent out, whether intentionally or unintentionally. That ...

The moon may be wearing a dusting of alien junk, and a group of researchers wants to go looking for it. In a new study that's under peer review for the International Journal of Astrobiology, ...