Alongside NBC Nightly News anchor Brian Williams and Republican politician Mike Huckabee, one of The Daily Show‘s strongest recurring guests is astrophysicist Neil deGrasse Tyson.

Tyson appeared on Monday’s episode and again proved not only his astounding intelligence but also his quirky nature, fun turn of phrase and general down to earth attitude (pun very much intended: “down to EARTH”, he’s an astrophysicist, get it?!). He’s always a pleasure to watch, even if he is the man responsible for robbing Pluto of its proper title as a planet.