Saturn as a teaching tool: the rings make everyone shut up

Every year I show a class a Cassini image like this one, and every year there's a moment of silence. Then someone asks whether it's real. That question is the entire lesson.
Photo: Kevin Gill from Nashua, NH, United States, CC BY-SA 2.0. Source
@tobias_lind · Core contributor
Wait until they see it live through an eyepiece. Tiny, wobbly, and absolutely real. People gasp.