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I don't think it could be that much because you would have to spend over 10 years on ISS in order for you to "lose" 0.18 seconds.

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There is a Russian cosmonaut who got stuck up in one of the space stations for a really long time. I believe it was Mir. Russia was having some difficulties at the time and they couldn't send up a replacement for him. He experienced something like 0.18 second of time dilation by being up there for so long. He is credited with having time traveled and holds a world record for it.

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There are different kinds of experience. Basically subjective and objective. Subjective is what they are aware of of course, which is nothing pretty much. Objective would be what their watch would tell them. And in that sense, they experience less time than we do in the same, um...period?

Is eucalyptus oil the same?

I grew up in Australia using eucalyptus oil as relief for stuffy noses during colds.

Is this also the same cooling effect,?

300 years passed on Earth, on the spaceship only 80 years have passed. It gets funky so you just need to read from bunch of sources till it click.

For example, everything moves at C on the spacetime continuum. Since we are moving very slowly through space, it means most of our speed happens on the time part of the spacetime. Since light moves at speed of C, from the POV of the photon, it has no travel time, it just teleports from where it is emitted to where it hits something.

In other world, if we surpass all limits and build a ship that moves at 1C. Whoever is piloting it would never know when to brake because there would be no time flowing.

Edit: break > brake

Spacetime is hyperbolic. Considering time dilation, that speed is instantaneous if you were riding that photon sans mass*.

Here's a comment from a few years ago and its parent with a better worded answer: https://www.reddit.com/r/askscience/comments/n3qgk/if_light_travels_from_one_point_to_another/c361txy/. If you were riding the photon you'd think you teleported but someone on earth you have measured you going at the speed of light.

If I can’t breathe through my nose, a spoonful of horseradish opens it up for about 15-20 minutes. It’s can’t be just perception. I go from not being able to breathe to being able to. Afrin does a better job, of course, but it’s addicting.

It is a consistent unit of measure, but what everyone measures as a second is relative. The same thing is true for lengths.

Is not a second a unit of measurement and constant, thus one second is equivalent anywhere? This is the concept that I don’t understand.

But Wikipedia says, it's 299,792,458 meters per second in vacuum. And we get to see things happening far away way later due to this delaying factor. Like, a star explodes, but we keep seeing it, because its light from past is still on its way.

Also, I still don't get how this is related to time for two colonies living on two different planets. I have a bad feeling that you're trying to mess with me, pal.

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Wikipedia has a handy graph showing the effect of general and special relativity for orbiting satellites in circular orbits. This highlights what you and others are describing.

https://upload.wikimedia.org/wikipedia/commons/thumb/c/ca/Time_Dilation_vs_Orbital_Height.png/800px-Time_Dilation_vs_Orbital_Height.png

Your misunderstanding comes from your thinking there is such a thing that "actual time has elapsed". Not everyone's second ticks at the same rate, and there's no way to say that mine is more valid than yours. But to the person actually on the ship they still feel like time moves "normal" since every physical process is dependent on the local flow of time.

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What gets me confusing is people talking about light speed.

How I understand this is, time flows slower or is more stretched at where there is more energy/matter/particles stuff, and the difference of speed or stretchedness of time between two places results as gravitational force towards the slower or more stretched time-space which has more energy/particle/matter stuff.

In short, I guess, when we are having only one generation of people living and dying on earth, on a planet with much less gravity, there might live perhaps three or four generations of people (this may or may not be possible due to people not being able to survive or reproduce in very low gravity, but let's ignore it since I don't know how to calculate that).

I still don't know what the light of speed has to do with that, since speed is related to distance, and what time is related to are energy density or gravity. I'd appreciate if someone could somehow grant me access to that part of this wisdom, that is teaching it to me somehow. Just pick my example of two planets if possible.

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Adding to this, human hearing doesn't abruptly stop at a specific frequency, but becomes less and less sensitive as you go further to the extremes.

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