Carl McNair, an author and inspirational speaker, will appear at Fernbank Science Center’s Cherry Memorial Planetarium this weekend.

McNair set up a foundation in honor of is brother, Ronald E. McNair, after he and six other astronauts died aboard the Space Shuttle Challenger in 1986.

McNair’s speech will be followed by an animated short film and “We Choose Space” film.

The event begins at 1 p.m. Saturday at the planetarium. The films begin at 1:30 p.m.