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If we took a 1m cube of space would it be bigger the following day as the universe expands?
If this is right does this mean that all the galaxies that they say are moving away from us are not moving away but the space between us and them is getting larger, such as the dots on a balloon would move apart as it were blown up?
I heard the dots on a balloon example somewhere else and thought id try this as i had 5 minutes to spare. Something else i noticed was the dots got larger as the balloon expanded so are all the bodies in the universe also getting larger in the same way as those enlarging dots?
Black holes are like this more matter you put into it, smaller they get because of increased gravitational pull, this also implies that size of the galaxy might be getting smaller.
Quote from: greeniemax on 01/03/2012 10:40:27Black holes are like this more matter you put into it, smaller they get because of increased gravitational pull, this also implies that size of the galaxy might be getting smaller.Is this correct?
Space does expand like distance between two galaxies is increasing at accelerated speed, but the thing is gravity has opposite effect on this expansion, thus galaxies themselves aren't expanding at same speed even if they are expanding at all.
The balloon experiment doesn't give a right picture because are we not on outer edge of universe but somewhere inside, thus it doesn't give right idea.