The Secrets Within Cosmic Dust

At the threshold of a sterile lab at NASA’s Johnson Space Center in Houston, I pull on a white clean-room suit, a surgical cap and mask, booties and latex gloves.

My host, a mineralogist named Mike Zolensky, swabs my digital voice recorder with alcohol to remove flakes of skin and pocket lint. He doesn’t want any detritus to contaminate the precious dust in the room.

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