North American XB-70 "Valkyrie" (Picture 1) Kimmo Huosionmaa In 1960’s United States Air Force and NASA tested new supersonic bomber, what had the capacity to flight in speed Mach 3. The planes were built two individuals, and one accident has ended this program. This program was the very expensive and only one existing "Valkyrie" is located in Air Force Museum, but legend remains, that the mystery plane code-named "Dark Star" was actually "Valkyrie" what was put together by pieces what left behind from original "Valkyrie" project. "Dark Star" was CIA project for sending small satellites to low Earth orbiter after "Challenger" incident. There might be many projects, what has this name, and here I don't mean Lockheed-Martin "Dark Star" drone. The purpose of "Dark Star" was to replace the shuttles with another kind of vehicles, because all shuttle launches were delayed because space