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8. NASA's career equivalent doseages for astronauts is computes as follows:
200 + 7.5 ( age - 30) rems ( males up to 400 maximum rems)
200 + 7.5( age - 38) rems (females up to 400 maximum rems)

Using these formulas, answer the following questions:

How many trips to Mars could a 40 year old man take before reaching the maximum amount of 'career' radiation exposure recommended by NASA?

How many trips to Mars could a 40 year old woman take before reaching the maximum amount of 'career' radiation exposure recommended by NASA?

Name some ways that the amount of radiation you received on this trip could vary.

Which of the two sources of radiation, cosmic rays and SPES, are the most hazardous and how would you try to minimize its risk to the crew?

Based on what you have learned, what are some things you could do to minimize the amount of radiation that you would receive on a trip to Mars?