10 of 10: Men in 100,000 years. While evolution in space is only beginning to be explored today, millennia of human space colonization of Earth-orbit and other solar system space colonies will also select for:
1. Larger eyes in response to the dimmer environment of colonies further from the Sun than Earth.
2. More pigmented skin to alleviate the damaging impact of much more harmful UV radiation outside of the Earth's protective ozone.
3. Thicker eyelids or a more pronounced superciliary arch to alleviate the effects low or no gravity that disrupt and disorient the eyesight of today's astronauts on the ISS. (Nickolay Lamm from What's Hot)

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