How do you solve a Moon mystery? Fire a laser at it

Has a layer of dust been slowly clogging up instruments left on the Moon by astronauts?

source https://www.smh.com.au/world/north-america/how-do-you-solve-a-moon-mystery-fire-a-laser-at-it-20200816-p55m6v.html?ref=rss&utm_medium=rss&utm_source=rss_feed