Once the remaining Saturn V components were clear of the second stage, the third stage took over for the final push toward the Moon. The Third And Final Stage Just Had One Engine The Saturn V's ...

A Saturn V rocket left over from the cancellation of ... with the Orbital Workshop taking the place of the S-IVB third stage. The rocket’s instrument unit (IU) was incorporated at the forward ...

Fifty years ago today, the massive Saturn ... II second stage was hoisted into High Bay 1 for mating with the first stage. This was followed on 21 March by the mating of the S-IVB third stage.