Just a quick note: The Holcomb Observatory at Butler University has opened for its fall season of telescope viewing and planetarium shows. It's a fun and budget-friendly way to spend the evening!
Public tour dates are Oct. 3-4, 10-11 and 24-25. Doors open at 7:30 p.m., the planetarium show ($3) begins at 7:45 p.m., and telescope viewing (free!) is from 8:45 to 10 p.m.