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User Name | Thread Name | Subject | Posted |
Jeri | BS: Space program goals (136* d) | RE: BS: Space program goals | 22 Dec 16 |
Bruce, how long does one spend on the ISS and how long would they stay on Mars? Lack of gravity and loss of bone density could be a problem. Also, does Mars get more radiation than Earth? I don't know these things, which is the primary source of the boggle: permanent residency vs a long visit. |