Dangers of space travel

Mindmap for the dangers of space travel: muscle atrophy, micrometeorites and radiation

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  • Created by: emily_w
  • Created on: 04-04-14 12:20
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  • Dangers of Space Travel
    • Radiation
      • Average American recieves 6.2mSv radiation per year
      • Radiation causes cancer and genetic disorders by mutating DNA
      • Martian surface gives 0.67mSv per day
        • If a mission stayed on Mars for 500 days, radiation dose would be 335 mSv
      • Radiation dose on a 210-day journey to Mars would be 368mSv
        • Combining 2 journeys' radiation with 500 days surface radiation, a mission would recieve a total of 1,071mSv
          • If a mission stayed on Mars for 500 days, radiation dose would be 335 mSv
          • Average dose overall would be 428.4mSv per year
      • Micrometeorites
        • Debris from space junk or bits of dust or rock in space
          • estimated 10,000 man-made objects larger than 10cm orbiting Earth
        • Could rip a hole in hull of space shuttle or astronaut's suit
      • Muscle atrophy
        • long periods in low/0 gravity causes muscle waste
        • Astronauts would need an intensive exercise programme to prevent, this would be time consuming
        • effects
          • heart problems, since heart is a muscle
          • astronauts could be bedridden when return to Earth
          • difficulty walking, back problems

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