I heard about einsteins theory of relativity (or something), like if ur in a different planet vs on earth, one person may grow older faster than other guy? well this still doesn’t make sense to me. the way i see time is that its just a way of keeping count of somethings age. but scifi movies and einsteins theory is like saying time is affected by speed?
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Not a full answer, but may help.
Space and time are not different things but different aspects of a single thing called spacetime. You are constantly moving in spacetime at a constant rate. That movement can be focused solely on time (ie standing still but time still moves forwards) or shared between the two (i.e. walking – where you are moving in space and time). As you get faster and faster in space, more of your movement is towards the space aspect rather than time and so time slows down. The nature of the equations means that you would only notice these effects at extremely fast speeds, hence Newton’s equations, which were formulated without taking into account spacetime, still work fine for most real world scenarios.
Complicating things, spacetime is all relative so you would not notice time (and space) changing yourself, only relative to others.
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