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Physics, Astronomy & Cosmology / Re: Space and Time
« on: 05/10/2006 17:47:48 »quote:
Originally posted by Ben
If time is said to slow down for an object which is moving fast relative to another object, does this mean that for a planet in a solar system on the outskirts of a spinning galaxy (which is moving fast) that time appears slower than for a planet in a solar system near the centre of a galaxy (which is moving more slowly)?
Will this effect make a difference to the time experienced on each of the planets over hundreds of millions of years?
Nobody seems to have mentioned that these time dilations are relative ! Suppose star A moves faster than star B, then both have a velocity relative to each other. A person on a planet near star A will see another person near star B ageing slower (maybe a microsecond over a lifetime) while a person near star B will see the other person (near star A) ageing slower. Now, I have used an argument from special relativity which is not really applicable since we are dealing with accelerated motion. There is some similarity here with the twin paradox, though it is more complicated here. So, one should use general relativity here which will become quit complicated. Any suggestions ?