imprint NASA's page NASA: First Footprint On The Moon famous “bootprint” picture NASA's page "Apollo 11 -- First Footprint on the Moon" NASA's page millions of years NASA's page NASA's page (source) Buzz Aldrin's first footprint on the moon NASA's page First Footprint on the Moon "Apollo 11 -- First Footprint on the Moon" NASA's page Apollo 11 -- First Footprint on the Moon imprint