Photo: Deep Cold Biological Samples In Space

NASA astronauts Tracy Caldwell Dyson (right) and Shannon Walker, both Expedition 24 flight engineers, prepare to insert biological samples in a dewar tray in the Minus Eighty Laboratory Freezer for ISS (MELFI-1) in the Kibo laboratory of the International Space Station. high res (1.7 M) low res (93 K)

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