Anyway, it's 2075 and we've got colonies on the Moon and Mars. They don't much talk about Mars but they do visit the moon quite often where they meet a Lunarian, one of only 4 people to have been born and rased on the Moon. Because it's only 1/6g, this twelve-year-old girl is already 6ft tall and still growing. She would never be able to live on Earth because her body is just too big for the gravity.
A similar thing would happen on Mars. People would be unusually tall and skinny (but not extremely so.) I don’t know if returning to earth would be as damaging to a Martian as it would for a Lunarian, but my guess is that they would have to go through some sort of physical therapy before they could go through such a dramatic change in environment.
]]>The passenger spaceship of the future could be a large beast, comparable in size to an ocean liner, with rotation providing artificial gravity. If the rotation was Earth-normal gravity, those acclimatised to Martian gravity would find it tough going at first. The journey from Mars to Earth would take maybe nine months, which would be plenty of time to become acclimatised.
Not all would be able to make the journey. The elderly residents of Mars would find the journey too risky to make. Their old bones may be too brittle, and bone fractures in the elderly can be fatal. Thus, such journeys are only for the young.
If the ships had Mars-normal gravity, then more people would be able to make the journey to the Earth system, but a visit to Earth itself would be restricted to those with medical clearance. On the other hand, most if not all who are fit enough to make the journey would be able to visit the Moon. Such visits run the risk of the visitor becoming acclimatised to the Moon's gravity. Some may be unable to return to Mars if they remained too long on the Moon.
]]>Hopefully, this is an interesting question. Could Mars colonists, especially those born and raised there, be able to visit Earth? I mean, so far, barring any advances in medical technologies, there's no way to stave off permanent damage due to low gravity. So, the long-timers and Mars-born among the colonists would suffer problems if they went to Earth.
As such, would any Mars colonist have to stay on Mars or travel in spacecraft with rotational gravity equal to Martian g?
Cordially,
EarthWolf
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