Boom breaks sound barrier with American-made private supersonic jet

XB-1 hit supersonic, hypnotic speeds on Tuesday, making American aviation history. XB-1 is the first commercial aircraft to reach supersonic speeds since the British Concorde jetliner in 2003, and the first civil supersonic flight in U.S. airspace.

NASA's Day of Remembrance: Remembering the lives lost

Every January, NASA holds a Day of Remembrance to pay respect to the lives lost while working to further the understanding of space. This includes the crews of Apollo 1, Challenger and Columbia.