Proving that the lost CAN be found, a small speck of lunar dust that has been missing for 40 years turned up recently in St. Louis.

"It's a speck — the size of a fingertip," said David Kols of Regency-Superior auction house, where the dust had been placed for sale. "But it's lunar material, and since we're not going back to the moon in my lifetime or yours, that makes it worth a lot to some people."

Preliminary testing has determined that it's "more than likely" moon dust, but final results are forthcoming.  Meanwhile, the story of where it came from and how it got

Moon Dust Missing for 40 Years Is Found at Auction House - TIME.