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Space
Space
Science
Robert Z. Pearlman

Astronaut preps purple kefir for a vitamin boost | On the International Space Station Sept. 8-12, 2025

A man in a black t-shirt holds up a tray of plastic pouches filled with purple fermented milk aboard a space station.

As their research activities continued, the Expedition 73 crew had a busy week on the International Space Station with the departure of a cargo vehicle and preparations for the arrival of two more.

Orbital observation

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