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.

(CNN/CBS) -- 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 ...

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, ...

"Warp drives" used by super-advanced alien civilizations may create specific space-time ripples in their wake that we can spot from Earth, a new paper argues. However, the jury is still out on whether ...

In a new study, scientists take on the search for extraterrestrial intelligence (SETI) community — and determine that they may have a crisis of imagination. Speaking to Universe Today, Columbia ...

The tiny “non-human” mummified remains found in Peru over the summer that spurred dozens of alien conspiracy theories are nothing more than dolls, forensic experts ruled. The creepy figures — with ...

In the wee hours of the morning after Halloween, 1988, a paper delivery girl named Erin sets out on her route in a sleepy Ohio town, autumn leaves crunching beneath the wheels of her bike as an odd ...

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. A ...