Aleksei (or Alexei) A. Leonov
Commander of the first manned mission to the Moon. Landing the LK-5 on the Ocean of Storms region, Leonov set foot on the lunar surface on July 20, 1969. LOK-13 pilot Vladislav Volkov remained in orbit while the lunar explorer gathered rock samples and planted the Soviet flag on the surface.
They returned to a heroes' welcome on July 24th, receiving both the "Hero of the Soviet Union" decoration, and a new decoration, the "Lenin's Order of Space Exploration", from Brezhnev.
Leonov retired from the space program and lectured across the world in the 1970s and 1980s.