His boots left moon dust on the last rung.

WSJ: Buzz Aldrin on His Lunar Home, the Eagle

That's why scientists are so interested in water at poles, and the fact Moon dust works well with microwaves and could theoretically be used to make a paved surface if you created roads.

BBC: 3D printers could use Moon rocks, say scientists

HUNTSVILLE, Alabama -- When the "moon dust" had settled Saturday, teams from Pittsburg State University in Pittsburg, Kansas, and Graff Career Center in Springfield, Missouri, were winners in the sixth Annual "Great Moonbuggy Race" in Huntsville, Alabama.

CNN: Student moon buggies make tracks at Marshall

He also worked on the unmanned flights that preceded them, which confirmed a prediction that he had made from his study of lunar craters: contrary to popular belief, an astronaut landing on the moon would not sink into the dust.

ECONOMIST: Gene Shoemaker

The "Mona Lisa" experiment was transmitted at a slow data rate of about 300 bits per second, but the "pathfinding achievement sets the stage for ... high data rate laser-communication demonstrations that will be a central feature of NASA's next moon mission, the Lunar Atmosphere and Dust Environment Explorer, " said Goddard's Richard Vondrak, the orbiter's deputy project scientist.

CNN: SHARE THIS

Next year, NASA is to launch a demonstration mission to test optical laser communications in conjunction with the LADEE (Lunar Atmosphere and Dust Environment Explorer) mission to the moon.

FORBES: Future Of NASA's Aging Deep Space Network Lies In X-Rays And Lasers

The more easily visible outlier in Saturn's famous bands of ice and dust is its E-ring, which encompasses the orbit of the moon Enceladus.

BBC: New ring detected around Saturn

By observing the cloud of dust and gas kicked up by each impact, scientists knew they could obtain valuable data about the Moon's composition.

BBC: Nasa reveals new information about moon probes crash sites