Astronaut Bruce Melnick told stories over a video chat at St. Pius X and three other schools in the U.S.
Kevin Ford, a University of Notre Dame alum, participated in a question and answer session Thursday while in the U.S. Space Station.
The Challenger Learning Center was opened in 1994 in honor of the seven astronauts killed during the launch of the Challenger space shuttle.
Neil Armstrong's alma mater, a school which has graduated many astronauts, honored his memory Monday.
Guests commemorate the legacy of an era for NASA in Lawrence County today.