The invisible science of staying healthy during long-term spaceflight

A Discussion with the Space Station Crew · 20:24 · Video: NASA · Watch at the source

In short: Life aboard the International Space Station is more than just orbital maintenance. From testing specialized exercise equipment to simulating lunar landings, every daily task is a calculated step toward understanding how humans can survive the journey to Mars and beyond.

The International Space Station serves as a high-stakes laboratory where every movement is an opportunity for data. During Expedition 47, NASA’s Tim Kopra and ESA’s Tim Peake utilized their six-month mission to conduct interviews regarding the realities of orbital life. Today, the station continues to host a rotating cast of astronauts and cosmonauts, such as the Expedition 75 crew, who balance station maintenance with rigorous scientific inquiry.

One critical area of focus is the physiological impact of microgravity. To combat the effects of weightlessness, researchers like ESA’s Sophie Adenot utilize the European Enhanced Exploration Exercise Device (E4D) to test fitness retention for future deep-space missions. Meanwhile, Roscosmos engineers Andrey Fedyaev, Anna Kikina, and Pyotr Dubrov investigate fluid shifts and circulatory health. Fedyaev has tested lower body negative pressure suits designed to pull fluids from the head back toward the feet, while Kikina and Dubrov have used specialized cuffs to measure how microgravity influences blood pressure and the microcirculatory system.

The station's workload also involves preparing for the arrival of new crews, such as the SpaceX Crew-13 mission. This involves complex logistics, including the reorganization of cargo within the Harmony module’s mating adapter by commander Jessica Meir. Such preparations ensure that when new members like Joshua Kutryk, Luke Delaney, and others arrive via the Dragon spacecraft, the station is ready to support the next phase of human exploration.

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