NASA scientist says we need to reopen the book on whether aliens visited Earth


Humans have yet to find any definitive proof of the existence of intelligent extraterrestrial life but one NASA scientist believes we may be getting in our own way and might have already ignored alien visits to our planet.

nasa scientist says we need to reopen the book on whether aliens visited earth NASA scientist says we need to reopen the book on whether aliens visited Earth



NASA scientist says we need to reopen the book on whether aliens visited Earth

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