Neil deGrasse Tyson gets a lot of love these days. It’s amazing where some charm and charisma will take you as an astrophysicist (namely, to frequent TV appearances and a couple of hosting gigs).

He popped up on The Nightly Show with Larry Wilmore last night to talk conspiracy theories, offering up his brand of calm rationalism as a counterweight to the conspiracy buffs on the other side.

He debunks the notions of a fake moon landing and abductions by aliens with probing fetishes, but not the idea that there are aliens somewhere.

“It would be inexcusably egocentric to suggest that we are alone in the cosmos,” he says, “But that is a separate statement from saying that we have been visited by aliens giving rectal exams.”

There was no mention, however, of the Kennedy assassination. Pretty suspicious.