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Effects of Human Spaceflight

Effects of Human Spaceflight. Megan Walker 3 rd Block 10-18-12. Risks & Benefits. Spaceflight = risky &expensive 18 people have died during spaceflights Robotic missions produce equal or greater scientific results with lower expenditures

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Effects of Human Spaceflight

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  1. Effects of Human Spaceflight Megan Walker 3rd Block 10-18-12

  2. Risks & Benefits Spaceflight = risky &expensive 18 people have died during spaceflights Robotic missions produce equal or greater scientific results with lower expenditures Human presence in space has no valid justification

  3. Selecting People for Spaceflights • Sending candidates into space is based on … 1. basis of their backgrounds 2. physical characteristics 3. psychological characteristics • Training Centers 1. United States- NASA’s Johnson Space Center 2. Russia- Yuri Gagarin Cosmonauts Training Center 3. Germany- ESA’s European Astronaut Centre 4. Japan- NASDA’s Tsukuba Space Center 5. China- Space city

  4. Selecting People for Spaceflights (cont.) Main ones • Astronauts & cosmonauts USUALLY falls into two categories .. 1st category- pilots who are responsible for piloting space vehicles . 2nd category- scientists & engineers who are responsible for carrying out the scientific & engineering activities for a particular mission. 3rd category- variously payload specialists & guest cosmonauts who are basically temps.

  5. Biomedical, Psychological, & Sociological Aspects People who go in to space MAY experience space sickness It may cause … 1. Vomiting (EWWW) 2. Nausea 3. Stomach Discomfort usually disappears within 2 or 3 days as brain adapts to environment. MAY reappear when the traveler returns to earth.

  6. Biomedical, Psychological, & Sociological Aspects (cont.) • Absence of gravity = loss of tissue mass in the calf & thigh muscles. • Loss of muscle mass in the heart has been observed in astronauts who have went on long duration missions. • In the absence of gravity blood that normally pools in the body’s lower part, shifts to the upper regions causing face to look puffy. • Usually experiences . . 1. sinus congestion 2. headaches 3. blood production decrease

  7. Biomedical, Psychological, & Sociological Aspects (cont.) Countermeasures = exercise in space. Developed to prevent these effects from causing health problems later on earth. 1. Light-headedness – disappears in 1 or 2 days 2. Lack of balance – disappears in 3 to 5 days 3. Motion Sickness – disappears in 3 to 5 days 4. Anemia – disappears in 1 to 2 weeks 5. Muscle Atrophy – disappears in 3 to 5 weeks 6. Bone Atrophy- disappears in 1 to 3 years or more

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