Tantalus V. Observatory

The South Park Planetarium is first seen in the episode titled Roger Ebert Should Lay Off the Fatty Foods. The Planetarium is run by Dr. Adams who has a bone marrow disease which ironicly prevents him from being able to pronoune the "t" in Planetarium which reults with him saying Plane arium. The Planetarium is used in that episode to hypnotize the people of South Park into volunteering at the Planetarium because it sees very little buisness.