- #1
procrastin
- 9
- 0
hey all,
i'm going to be doing a presentation for my astronomy module, and i was thinking that i should talk about the idea of the universe being in an eternal cycle of expansion and rebirth.
i'll compare the expansion of a universe to a spring and harmonic motion. if the rate of the expansion is being reduced, then that may mean that there is a force which is decelerating this expansion. eventually the speed will be reduced to zero, from which point the bodies will then start moving in the opposite direction, with a negative acceleration. i believe that the "centre of the universe" may act as the point of equilibrium, meaning that the speed of the bodies will be at its peak.
the issue which i can see is what would cause the bodies in the universe to slow down and contract? what mutual force is there to cause everything to decelerate in the first place? will it be something to do with the Energy and energy density? a friend of mine also mentioned that the expansion/contraction will not be in a perfect sphere, which i neglected in my thought process. now I've come to the conclusion that instead of one large collision, there are smaller collisions throughout the universe.
this link will explain what i mean if i haven't made myself clear;
http://www.princeton.edu/pr/pwb/02/0506/0506-cyclicuniverse.htm
please point me out in the right directions if you have any opinions on this subject
thanks :D
i'm going to be doing a presentation for my astronomy module, and i was thinking that i should talk about the idea of the universe being in an eternal cycle of expansion and rebirth.
i'll compare the expansion of a universe to a spring and harmonic motion. if the rate of the expansion is being reduced, then that may mean that there is a force which is decelerating this expansion. eventually the speed will be reduced to zero, from which point the bodies will then start moving in the opposite direction, with a negative acceleration. i believe that the "centre of the universe" may act as the point of equilibrium, meaning that the speed of the bodies will be at its peak.
the issue which i can see is what would cause the bodies in the universe to slow down and contract? what mutual force is there to cause everything to decelerate in the first place? will it be something to do with the Energy and energy density? a friend of mine also mentioned that the expansion/contraction will not be in a perfect sphere, which i neglected in my thought process. now I've come to the conclusion that instead of one large collision, there are smaller collisions throughout the universe.
this link will explain what i mean if i haven't made myself clear;
http://www.princeton.edu/pr/pwb/02/0506/0506-cyclicuniverse.htm
please point me out in the right directions if you have any opinions on this subject
thanks :D