This question answers the issue I was wondering about of how well an exoskeleton suit could help my characters move as normal in higher and lower gravity Could a robotic exoskeleton give humans Earth like movements on a high gravity planet?

The issue many member brought up is how the internal organs would suffer under higher gravity, or deteriorate in lower. Compression suits that pilots use to force the blood from the lower parts of the body back up to the brain is mentioned but also stated this isn't a perfect solution.

My characters eventually, later in the story will be a digital memory stored in a robotic body but I am using this exoskeleton phase to progress the story and for those characters to get used to and to realise why a fully robotic body is beneficial.

My question is what internal implants or other artificial adjustments can I make to their biological bodies to cope with being able to function at gravity levels of roughly 0.5g to 1.5g or slightly more?

Giving them oxygen masks is something they might need but what internally can be added to help them function along with their exoskeleton suit, or will they need so many artificial parts that they should jump straight to the fully robotic bodies?

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    $\begingroup$ First question - how long are they planning on staying in any of these environments, and what sort of readjustment to normal period are you going to need? Multiple astronauts have lived in space for >1 year periods, it's just usually that the recovery period is pretty terrible (but you have an exosuit that can help with this already...). If they keep transferring rapidly between extreme gravity levels they're going to want that robot body, but if they have 10 years in between.... $\endgroup$ – Clockwork-Muse Apr 15 '20 at 17:15
  • $\begingroup$ @Clockwork-Muse in terms of planetary missions its a few hours to a few days per mission, if they need recovery time as u suggest I can add that between missions but the characters in mind are also from different planets so I wanted to explore if they could exist all together in a rotating space habitat set at earth level gravity together? I am realising now that is complicating things further. $\endgroup$ – user69935 Apr 15 '20 at 17:30
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    $\begingroup$ The best part about centrifugal-gravity space stations is that you have a gravity gradient; gravity is stronger the farther away from the center you are. At the tech level of full exo or robot bodies, having multiple decks even in a "small" size station (eg, by offset counterbalances) is relatively trivial. Everybody can live on the same station, and even visit their friends without too much trouble. How long between planetary missions - at the extreme edges (.9g not being a concern)? $\endgroup$ – Clockwork-Muse Apr 15 '20 at 17:38
  • $\begingroup$ Other question - why fully transfer to a robot body? Can they not remote-pilot the robot body with the exosuit? $\endgroup$ – Clockwork-Muse Apr 15 '20 at 17:39
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    $\begingroup$ ... then the reason they choose the robot bodies isn't directly "all these planets are hard on us", it's "I'm getting old, and they have these new robot body things, so I can live longer". That is, they've probably already done artificial organs or whatever, but will need to transfer to the robot body anyways. Note that who/what made the space station, and how big/occupied it is is going to decide if there are (available) "nonstandard" gravity gradients. $\endgroup$ – Clockwork-Muse Apr 15 '20 at 18:13

Assuming your species has artificial organs which have been structurally reinforced, a possible solution would be to just secure your organs on with big magnets, preferably electromagnets. This could prevent the movement of organs in the body, and prevent them from deforming.

For the heart, if it was an artificial organ, the suit can provide feedback to the heart, telling it to beat harder or softer, depending on the gravity.

For muscles, to prevent atrophy and overuse, you can have the suit make movement harder (preventing atrophy) or help the wearer make them. For cardiovascular problems, this might be the answer:

There may be techniques that could mitigate some of the problems of prolonged exposure - e.g. remaining immersed in water causes external pressure to mitigate a large part of the stress on cardiovascular system.

If the suit was for geriatric purposes, like prolonging life, the suit could help repair organs, cells, or on a smaller scale, even genomes. It could help with exercise.

In short, I think if the suit was just for prolonging life, a simple exoskeleton would be fine. If it were for gravity, however, artificial organs would be the way to go.

I have no idea if this is the answer you wanted, but I hope it helps!

  • $\begingroup$ Thanks, that helps, some good ideas. Do you think there would be issues with their veins in higher g, i think i read somewhere there would be added pressure and they could burst? $\endgroup$ – user69935 Apr 18 '20 at 12:50
  • $\begingroup$ I have no idea. It makes sense, though. $\endgroup$ – user75058 Apr 18 '20 at 12:51

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