July 26, 1971 – launch of Apollo 15
Apollo 15 launched on July 26, 1971, the ninth manned mission of the Apollo program. It was the fourth lunar landing mission. Her crew was led by Commander David Scott, Command Module Pilot was Alfred Worden, and the Lunar Module Pilot was Jim Irwin.
“It was the first of what were termed J missions — long duration stays on the Moon with a greater focus on science than had been possible on previous missions.”