The Buhl Planetarium at Carnegie Science Center will celebrate Back to the Moon Day this Saturday with three showings of “Back to the Moon for Good,” a 25-minute film about the Google Lunar X Prize competition. Members of Astrobotic Technology, the Carnegie Mellon spinoff that aims to win the prize, will make remarks and be on hand with information about the team.

Members of Lunar Lion, a competing team from Penn State University, also will be available after the showings at 1:30, 2:30 and 3:30 p.m. Saturday. The film is free with admission to the science center. More information is available on the CSC website.