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Artemis II Astronauts Use Flywheel Exercise Machine to Counter Microgravity Effects
Astronauts on NASA's Artemis II mission employ a flywheel-based exercise device to mitigate physiological changes from prolonged microgravity exposure. The human body experiences adaptations in space that can lead to muscle atrophy and bone density loss without countermeasures. This equipment supports fitness maintenance during the mission's 10-day duration.
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NASA's Artemis II mission, scheduled for launch in 2025, will send four astronauts into a lunar orbit for approximately 10 days. The crew includes NASA astronauts Reid Wiseman, Victor Glover, and Christina Koch, along with Canadian Space Agency astronaut Jeremy Hansen. During the mission, the astronauts will face the challenges of microgravity, which affects the human body in various ways.
Microgravity leads to physiological changes such as fluid shifts, muscle weakening, and bone density reduction. To address these effects, the Artemis II crew uses a flywheel exercise machine integrated into their spacecraft. The device provides resistance training to help maintain physical fitness and prevent long-term health issues.
The Artemis program aims to return humans to the Moon and establish a sustainable presence there as a precursor to Mars exploration.
Artemis II marks the first crewed flight of the Space Launch System rocket and Orion spacecraft since Apollo 17 in 1972. Training for the mission includes simulations of spaceflight conditions, with a focus on exercise protocols to simulate zero-gravity environments. The flywheel machine operates by storing kinetic energy, offering variable resistance that mimics gravity's pull.
Unlike traditional weight-based equipment, it does not rely on fixed masses, making it suitable for space constraints. NPR reported that this technology helps combat potential damage from extended time without gravity. Astronauts perform daily exercise routines using the flywheel, typically for two hours, targeting cardiovascular health, muscle strength, and bone integrity.
Post-mission, the crew will undergo medical evaluations to assess the effectiveness of these countermeasures. Data from Artemis II will inform future missions, including Artemis III, planned for a lunar landing.
