Join space history curator Martin Collins as he discusses the Sirius FM-4 satellite, which represents the first generation of space-based, commercial radio service developed by Sirius Radio. 

Meet at the nose of the Lockheed SR-71 Blackbird in the Boeing Aviation Hangar.

About the Ask an Expert Series: A few times a month at the Steven F. Udvar-Hazy Center, a Museum staff member talks to the public about the history, collection, or personalities related to a specific artifact or exhibition in the Museum.