I’ve seen things of people aging slower in space, but any time I look it up it always comes with like 15+ words I have to look up to understand or concepts im not aware of. How does this work, and is it considered to be a form of time travel?
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Real ELI5:
Time depends on 2 things – speed and gravity. Faster the speed- slower the time and vice versa. Stronger the gravity- slower the time and vice versa.
So when you see movies where people are aging slower in space, they are either traveling at a very high speed or they are under the impact of a lot of gravity(bigger plants and blackholes).
Time is relative, so just because you are traveling very fast or are near strong gravity field, doesnt mean you will experience the time in slow motion. You will experience it as you are doing it right now. Its only when you compare your clock to someone who was in opposite condition, is when you know your time passed differently.
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