but also on a series of rockets dating back to the early days of the space race. Delta II is the ultimate evolution of the US Air Force’s Thor missile, which first flew in 1957 and stood watch ...

hence the vehicle was called the Thor-Delta.) Related: Meet the Delta Rocket Family of the United Launch Alliance Three months later, the Thor-Delta deployed Echo IA into orbit, leading to the ...

Highlights of NASA’s timetable: 1960. Test launchings of half a dozen new satellites and space vehicles, including the use of the new Thor-Delta rocket to send an instrumented payload to the ...

CAPE CANAVERAL SPACE FORCE STATION, Fla. – United Launch Alliance is preparing the final Delta IV Heavy rocket for its swan song, sending a national security payload into orbit before concluding ...