"Spirits from the Sky: Thunder on the Land," a new star show produced in collaboration with the Pawnee Nation will debut at the University of Colorado at Boulder's Fiske Planetarium on Saturday, April 27, at 2 p.m. The show will be preceded by a traditional Pawnee blessing ceremony and songs, and will be followed by a reception. Most of the show is pre-recorded, but there also is a live portion. It will be repeated Tuesday, April 30, at 7:30 p.m.