Boot and footprint

Aldrin: "I felt buoyant and full of goose pimples when I stepped down on the surface. I immediately looked down at my feet and became intrigued with the peculiar properties of the lunar dust. If one kicks sand on a beach, it scatters in numerous directions, with some grains traveling farther than others. On the moon the dust travels exactly and precisely as it goes in various directions, and every grain of it lands nearly the same distance away."

July 16, 2009 4:00 AM PDT

Photo by: NASA

| Caption by: Jonathan E. Skillings