Closing times vary. Hours are noon to 10 PM Monday through Thursday and until midnight on Friday and Saturday. You might want to start with a free campus tour beginning at 11 AM and 2 PM Monday through Friday or on the hour by appointment. You'll get a look at the campus plus a history of the school and information about its philosophy. You'll find an extensive collection of insects, plants, reptiles, fish, shells, mammals, birds and eggs for research exhibits.
Admission is free.
The museum is open from 9 AM to 5 PM Monday through Friday. Hours are 9 AM to 5 PM, and admission is free. Admission is free. Admission is free. Off the campus of BYU you'll find several other museums worth noting.