The Ask An Expert lecture series at the Steven F. Udvar-Hazy Center is presented every 2nd and 4th Thursday at 12:30 PM. A Museum staff member talks to the public about the history, collection, or personalities related to a specific artifact or exhibition in the Museum. The Saturn V rocket, which sent astronauts to the Moon, used inertial guidance, a self-contained system that guided the rocket's trajectory. How to attend