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If we wish to colonize another world, finding a planet with a gravitational field that humans can survive and thrive under will be crucial. If its gravity is too strong our blood will be pulled down into our legs, our bones might break, and we could even be pinned helplessly to the ground.
Finding the gravitational limit of the human body is something that's better done before we land on a massive new planet. Now, in a paper published on the pre-print server arXiv, three physicists, claim that the maximum gravitational field humans could survive long-term is four-and-a-half times the gravity on Earth.
Or, at least you could if you are an Icelandic strongman – and Game of Thrones monster – who can walk with more than half a metric ton on your back. For mere mortals, the researchers say, it would need to be a little weaker.
[...] For the maximum gravity at which we could take a step, the team turned to Hafþór Júlíus Björnsson, an Icelandic strongman who once walked five steps with a 1430 pound log on his back, smashing a 1,000-year-old record[*].
[*] YouTube video.
What's the Maximum Gravity We Could Survive?
(Score: 3, Interesting) by bzipitidoo on Saturday September 22 2018, @03:01PM (2 children)
I read of an experiment in which chickens were raised in a 2G environment. (They used centrifugal force to mimic heavier gravity.) The chickens survived, growing much thicker legs and heavier bones and musculature.
We also have info from fighter plane pilots and NASA tests. I forget the exact figures, maybe 10G max, maybe up to 15G for a fraction of a second, but direction and duration matter a lot. You can take the most Gs when lying on your back. 4.5G could be okay for standing but too much if you trip. As I recall when looking into how fast a rail gun could safely accelerate human passengers, for launch into orbit, 6G was about the limit for longer durations.
(Score: 0) by Anonymous Coward on Saturday September 22 2018, @04:34PM (1 child)
Or maybe think in a ladder method. Say 2G steps. I am two Che the size of a average man so I am already at 2G. Yes my brother new are thicker but I run at 12 more n mile. But once the body / populating n live by full time in 2G, that will become in generations the new 1G. Then repeat.
But to me the new concern is eating and pooping. The structure of the body can hold up with a 2G mass but the only niter app plumbing becomes a issue. Since the soft organs will pull down by 2G not. In child bearing comes to issue since that large mass is on not held up by the pelvis and huts over at the end.
(Score: 3, Funny) by PartTimeZombie on Sunday September 23 2018, @11:45PM
Quick everyone run away, the AI are taking over!!!
Well, they will once they learn to form a coherent sentence.