NASA has thrown cold water on Harvard astrophysicist Avi Loeb's theory that interstellar visitor 3I/ATLAS was sent to us by an extraterrestrial civilization, a sobering, albeit unsurprising conclusion that could put the captivating hypothesis to rest once and for all. In early July, astronomers made the baffling discovery, only the third interstellar object ever detected within the solar system. Since then Loeb has advanced the far-fetched, "tantalizing possibility" that 3I/ATLAS was "sent towar