NASA astronaut and Expedition 63 Commander Chris Cassidy works inside the International Space Station's Harmony module servicing microbial DNA samples for sequencing and identification.

Expedition 63 Commander Chris Cassidy sequences microbial DNA samples

iss063e063777 (July 31, 2020) --- NASA astronaut and Expedition 63 Commander Chris Cassidy works inside the International Space Station's Harmony module servicing microbial DNA samples for sequencing and identification.

Image Credit: NASA

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Expedition 63 Commander Chris Cassidy sequences microbial DNA samples

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