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A comment on Aliens and the Enlightenment. Parent comment

Re:Aliens and the Enlightenment by TimTheTinker on Thursday September 19, 2024 @09:00AM (#41591417)
Agree that interstellar travel is impossible with current tech.

But based on what I know, I don't see any reason to believe a manned mission to Mars is impossible with current technology.

Do you have specific reasons we can't, or examples of technological gaps?

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Re:Aliens and the Enlightenment by JPLeRouzic on Thursday September 19, 2024 @10:28AM (#41592276)
- One year in weightlessness will almost disable someone and give him blindness, rapid bone loss, cachexia, cardiovascular problems, and sometimes immune diseases.

- One year enduring radiation sickness.

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Re:Aliens and the Enlightenment by TimTheTinker on Thursday September 19, 2024 @10:54AM (#41592566)
- artificial gravity through rotation

- various strategies to block incoming cosmic rays: https://en.m.wikipedia.org/wiki/Effects_of_ionizing_radiatio.... In particular, hydrogen-rich plastics.

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