When the first humans stepped onto the moon a half-century ago on July 20, 1969, they knew they were venturing into the unknown. Some had feared their lander would be swallowed up by bottomless layers of dust as almost nothing was known about the moon surface at the time. But they knew it wouldn’t, thanks in large part to groundbreaking research being performed at the University of Arizona’s then fledging Lunar and Planetary Laboratory.
Source:
https://phys.org/news/2019-06-laboratory-solar-legacy.html