$5 off family memberships for the museum. It's a great deal because they are a member of ASTC and you can use your membership to get in free at other ASTC museums. astc.org for other member museums!
The planetarium offers a star talk about the current night sky, and astronomy and space research shows highlight current happenings such as the Hubble Space Telescope and missions to the planets. Read more
If you need to park and all the spaces in the visitors lot are full, go to the Palmer lot which is off of Washtenaw Ave. Park near the south elevators and take the elevator to P or P4.