It’s a conspiracy theory so prevalent it has entered the mainstream. Everyone, it seems, has heard of the idea that the US government is sitting on proof that extraterrestrials exist and have been visiting Earth for decades.
It’s easy to dismiss such stories, but seriously, could there be even a small amount of truth in it? Could extraterrestrial probes really be functioning near Earth? We don’t know. But Harvard astronomer Prof Avi Loeb’s Galileo Project aims to investigate... more
