On August 21, 1965, Gemini 5 lifted off from Cape Kennedy on the program’s third crewed mission to Earth orbit. Here’s a look at astronauts Gordon Cooper and Charles Conrad during training and on the mission, from the archives at NASA.

Astronauts Charles Conrad Jr. (left), pilot, and L. Gordon Cooper Jr., command pilot, Gemini 5 prime crew, pose for a photo, August 16, 1965.

NASA