Scientists are sharpening the methods used to search for alien artifacts inside our own solar system, drawing on recent ...

Critics noted that the spherules’ chemistry could match coal ash or other waste from power plants and steam engines, and that their size and distribution did not require any exotic explanation, which ...

Scientists have found new evidence suggesting that interstellar 3I/ATLAS is not an alien spaceship, as one conspiracy theory ...

A team of astronomers found no radio signals from the comet that would suggest it is an extraterrestrial spaceship. The comet was confirmed in July 2025 as the third known object to enter our solar ...

An astrophotograph of the interstellar comet known as 3I/ATLAS highlights its green coma and a wandering blue-tinted ion tail. (Copyright Victor Sabet and Julien De ...