Cosmonaut Elena Serova installing the third laboratory, 'PK-4', in the European Columbus module on the ISS

Cosmonaut Elena Serova installing the third laboratory, 'PK-4', in the European Columbus module on the ISS
Cosmonaut Elena Serova installing the third laboratory, 'PK-4', in the European Columbus module on the ISS
Cosmonaut Elena Serova installing the third laboratory, 'PK-4', in the European Columbus module on the ISS.
Credit:

ROSCOSMOS/ESA

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