A mysterious cigar-shaped object spotted tumbling through our solar system last year may have been an alien spacecraft sent to investigate Earth, astronomers from Harvard University have suggested.

The newly discovered interstellar object 3I/ATLAS could be a piece of "possibly hostile" extraterrestrial technology in disguise, according to controversial research from a small group of scientists, ...

A paper from a SETI (search for extraterrestrial intelligence) Institute scientist has directly addressed claims that interstellar comet 3I/ATLAS is an alien spacecraft. OnJuly 1, 2025, the Asteroid ...