1971: Apollo 15 (NASA)

(Sunday, August 1, 1971) — Two Apollo 15 explorers radioed jubilantly today from a steep lunar mountainside that “we found what we came for,” a crystal-filled rock believed formed close to the time of the moon’s very creation.

Astronauts David R. Scott and James B. Irwin planted the American flag in triumph to close out their second buggy-driven expedition far along the ancient Apennine Mountain front.

They were out on the dusty lunar surface a record 7 hours and 13 minutes.