Apollo 4 leaves the Vehicle Assembly building for erection at Pad 39-A at the Kennedy Space Center.
Image: NASA.

On this date in 1967, NASA launched the unmanned Apollo 4. This flight marked several ‘firsts:’ it was the first all-up test of the Saturn V rocket, carrying the first Block 1 command and service module, and the first lunar module test article. It was also the first use of Launch Complex 39 A, which would launch Apollo 11 two years later. You can read NASA’s feature article about the flight here.