Gary goes where he shouldn't, so you don't have to.
There is no ground on Jupiter. Gary tries to land anyway, and keeps falling.
Eleven kilometers down, in total darkness. Gary takes a tiny sub to the deepest place on Earth.
Gary is the guy who asks the questions everyone thinks but nobody says out loud. Why can't we land on Jupiter? What's at the bottom of the ocean? The narrator knows the answers. Gary is the one who goes and finds out, usually the hard way.