Is it true that people in space age slower than on Earth? If so, why?

Interesting question.Others mainly talk about the passage of time, which in the absence of gravity and the higher speed that usually applies in space, goes slower. The effects are limited because the difference in standard gravity on earth and no gravity are small and we do not go so fast again.

A whole other question is whether you are physiologically, biologically, ageing, so whether you age more physically.

A number of studies have been done on this, where a number of links are included.


  1. There are things that accelerate aging, such as muscle reduction;
  2. There are things that slow down aging, such as becoming the longer of the telomeres, which could make recovery better
  3. There is evidence that the metabolism slows down, which could lead to longer life;
  4. The energy transfer is slower, which can cause more damage, which accelerates again aging.

It is not yet clear what the effects are.

Finally, the increased radiation activity should not be underestimated.We are nicely protected by a magnetic field from cosmic radiation, in space there is an elevated (at ISS 10x higher) radiation level, which results in a lot of damage to the DNA, with all the consequences that entails.

NASA Twins Study Confirms Changes to Mark Kelly’s Genes

A number of cases have been observed after the return of Mark Kelly芒 鈧劉 s

  • The 芒 鈧?虄space Gene芒 鈧劉, changes at gene level related to the immune system were adjusted, the telomeres had become longer.

It is not yet clear why and whether gravity has anything to do with it.

Do we age faster in absence of gravity?

  • This goes more into what changes in the body, muscle tissue becomes less (5% per month) and the VO2 Max is 25% reduced after a few weeks.

This seems to be an acceleration of aging in motion because the muscles can actually handle the waste worse (they 芒 鈧?虄acidifying 芒 鈧劉 faster and are worse able to regulate the oxidative process

Microgravity effects on Drosophila melanogaster behavior and aging.Implications of the IML-2 experiment

  • A research on fruit flies shows that they age faster, related to the process of energy passing through the mitochondria, which leads to a lower ATP, which again leads to higher acidification

Study of the effects of space flight on the aging of C. elegans (Space Aging)-08.01.18

  • An investigation that is now in progress on C.

Elegans (small round worms).No conclusions have yet been published.

Effects of microgravity and hypergravity on aging and longevity of insects

  • It is investigated (on flies) whether the metabolism accelerates or slows down, by also looking at what happens when you increase gravity.

What it shows is that the metabolism sometimes accelerates at higher gravity, but a conclusion they have not yet been able to Pull The course of time in physical processes (i.e. including life) depends where you are in space and how fast You travel.Processes in a gravitational field (such as on Earth, the Moon, the Sun) will run slower relative to processes that are farther away from gravity fields. Processes that move at a high speed will be slower relative to lower speed processes. With many experiments it has been demonstrated that this is the way how the universe works. The mathematics of these processes is described in the theory of relativity of Albert Einstein.

What does this mean in practice?For everyday processes like human life there is no effect whatsoever. The Earth’s gravitational force is too weak to see easily measurable effects at the time. Only with the most advanced atomic clocks can it be demonstrated that the time on Earth runs slower than in space for a fraction of a second. Concretely, on earth things will be about 2 minutes younger on for every million years compared to in space.

There are also satelite and spaceships around the earth.They have a certain speed, which will also make their time slower than those on Earth. Depending on the speed of the satelites, the effect will be greater or smaller. But here too we are talking about fractions of seconds and concretely in a few minutes in a million years time. The speeds are too slow to measure large relativistic effects.

The gravitational effects will make time for space travellers run a little faster, and the speed effects will be the time for them to expire a bit slower later.Depending where you are you will get older or something faster or slightly slower. However, these relativitic effects are too small to affect human life. It involves millionsts of a second on a human life.

No that’s right.That is also not what the example of the twins of which one is going to travel in space demonstrates.

It’s not the fact that you ‘re in space, but the difference in relative speed between the two people, so the speed difference compared to each other.Di茅 makes a difference in the course of time.

Yes, because there are fewer negative factors present there that might affect aging.

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