"We leave as we came... with peace and hope for all mankind," Apollo 17 commander Gene Cernan said as he took man's last steps on the moon. It's been 45 years since the launch of Apollo 17 ...

Before Apollo astronauts set foot ... closeup images before impacting on the moon's surface. Ranger 7 first accomplished that goal in July 1964. On Feb. 17, 1965, its successor Ranger 8 launched ...