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Anonymous-USA t1_jdfem6r wrote

There is an ergosphere around every black hole that extends past it’s event horizon. Yes, there would be time dilation, but it would become less extreme exponentially with the distance from the center of gravity.

But time is relative so to any observer on that planet, time would tick normal to them. We experience time dilation on Earth moving around the sun, and the gravity well of the sun too, but the time dilation compared to, say, an observer on Uranus is negligible. For example, time elapses on Uranus 59.99999997 seconds for every 1 minute on Earth.

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EarthInteresting9781 OP t1_jdfevlk wrote

So would you age slower on Uranus versus earth. Or would your body age all the same?

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Anonymous-USA t1_jdfgp5l wrote

If you had an identical twin on Earth and Uranus, when the one on Earth reaches 70 yrs old, the twin on Uranus will be 1.1 second younger. Not including the time dilation experienced traveling to Uranus, but let’s say we have a transporter to blink us there.

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Exano t1_jdfuwdz wrote

You will always age the same relative to you.

So, assuming you could live on such a massive world, you turning 30 would take the same amount time as here on Earth, so far as how "long" it feels to you.

However if you were to somehow leave and come to earth, you'd find it "older". So like the twin on Uranus example posted here, if you and your clone were born at the same time, black hole you would be "younger" - although - if your clone was now 60 (to your 30) - you'd have "experienced" half as much time as he has.

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Raging_Skywalker t1_jdj0y9i wrote

So on intergalactic level it would be a strategic time-advance to be as isolated from gravity sources as possible, right? For example a perhabs planet-sized ship with a highly advanced species leaving its galaxy-cluster to avoid encounters with other species

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Anonymous-USA t1_jdjn6pb wrote

What??? I don’t know how you came to that conclusion. The time dilation is basically negligible unless very close to the gravity well, even if there is some residual effect past the event horizon or heliosphere (for a sun). In fact, there may be advantages in energy access closer to a major interstellar object.

So I doubt it would make any difference. Rather, any intergalactic species (even our own) would want to mathematically account for time dilation from both sources — velocity and gravity — when communicating data and positioning. Which we already do ourselves. GPS wouldn’t work without accounting for time dilation. So accounting for it, yes, strategically designing around it, unlikely imo

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