A long, flat hunk of space rock that has eluded scientists since it zipped past our planet last year may, in fact, be a piece of alien technology, according to a new paper by Harvard scientists. The ...

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Avi Loeb, the chairman of Harvard’s astronomy department, will scour the depths of the ocean in search of remnants that could prove aliens have contacted Earth.

A cosmic visitor is stirring up an earthly debate. A Harvard University astrophysicist has suggested the incoming interstellar object 3I/ATLAS could be an alien probe. But NASA and most astronomers ...

Harvard physicist Avi Loeb went to Papua New Guinea looking for the remnants of what he believes is a rare meteor—one that may have originated from outside our solar system before crashing into the ...

Rare interstellar visitor the size of Manhattan carries secrets from distant star system Controversial 'comet': An artist's rendition of Comet 3I/ATLAS as it rockets through our Solar System at 58 km ...