The Cosmosphere has a detailed display of the history of rockets, including the German programs during WWII, and it has displays of the Apollo 13 space capsule, Gus Grissom's space capsule that sank (along with dimes on display), and a lunar rover. It also has several auditoriums, including a planetarium, where they conduct demonstrations. I don't remember if they have an IMAX, but I'm thinking they do.
If this type of thing interests you, it's worth the drive to see.
Cosmosphere sounds good. Our first grandson wants to be an astronaut. Thanks!
They have a SR71 Blackbird on display in the lobby too