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Long Term Human Presence in Space Requires Artificial Gravity and Radiation Shielding

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  • Title:
    Long Term Human Presence in Space Requires Artificial Gravity and Radiation Shielding
  • Author: Jones, Harry
  • Subjects: Man/System Technology and Life Support
  • Description: Astronauts who spend many months in microgravity suffer serious health problems including muscle atrophy, cardiovascular deconditioning, bone calcium loss, impaired vision, and immune system changes. Exercise countermeasures have been insufficient to maintain normal human performance. Similar problems can be expected in the partial gravity of the Moon and Mars. Achieving the long-term presence of healthy humans in space requires providing artificial Earth level gravity. This can be done on the Moon and Mars by using horizontally rotating habitats with angled floors, but it is easier in space habitats. Astronauts travelling beyond the protection of the Earth’s magnetic field can suffer harm from cosmic background radiation and occasional strong solar flares. Supporting healthy long-term human lives will require radiation shielding on the Moon and Mars as well as in space. Human space settlement will probably begin with artificial rotating space habitats in Low Earth Orbit (LEO) where they will be shielded from radiation. The earlier anticipated human communities in pressurized domes on the Moon or Mars appear unrealistic because of the now known problems of partial gravity and radiation.
  • Publisher: Ames Research Center: American Institute of Aeronautics and Astronautics
  • Creation Date: 2023
  • Language: English
  • Source: NASA Technical Reports Server
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