The Roger B. Chaffee Planetarium, named for astronaut Roger B. Chaffee, was constructed in the early 1960s as part of the Public Museum of Grand Rapids. The facility initially featured a 30-foot (9.1 m) plaster dome and a Goto Optics mechanical star projector. Among the planetarium's first shows was "Star of Wonder", an astronomical attempt at an explanation of the Star of Bethlehem. The show received positive reviews in the Grand Rapids area and remained in the Chaffee's catalogue for several years.