Is it possible that if the universe is unbounded, yet finite, that gravity wraps around on itself and will affect the object that generates it. Why or Why not?
2007-02-05 22:39:42 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Astronomy & Space
The shape of the Universe is now pretty well understood. It is, on the large scales, very nearly flat and expanding. The part of it that is observable or knowable is a sphere that is currently 40 billion lightyears in diameter and expanding at the speed of light. Dark Energy is far more important to the large-scale structure of the Universe than gravity, and Dark Energy may cause matter that is now within our event horizon to flow back out beyond it. Gravity could have made the Universe unbounded, yet finite, but apparently it didn't. This was the favored theory among physicists twenty years ago, but not anymore. Why not? Well, mostly it's a matter of better observational data, finally seeing the microwave background anisotropies, measurement of many Type 1b supernovae, all the advances in observational cosmology in the past decade.
Beyond our event horizon is almost certainly a great deal of material that is like the part of the Universe we see. If "early inflation" is right, our Universe extends at least a billion times further than our current event horizon. Beyond that may be regions that have "different physics", possibly including other big bangs. Overall, the Universe may be infinite, and there may be an infinite number of (mostly non-intersecting) big bangs.
2007-02-06 02:00:19 · answer #1 · answered by cosmo 7 · 0⤊ 0⤋
The universe may be finite but unbounded. A loose analogy is the surface of a sphere. There is no scientific data supporting the fact that gravity affects the object that generates it. Yes, the earth's gravity holds it together but that's only because it's made of many particles which interact. Each particle doesn't affect itself though.
2007-02-06 06:53:18 · answer #2 · answered by Gene 7 · 0⤊ 0⤋
The universe is very big. The effect we call gravity seems to diminish with distance. In fact the force we measure is proportional to the reciprocal of the square of the distance. We have not determined how big the Universe is. We know that it is at least a few Billion Light years across. The effect of gravity wrapping around the Universe would be extremely difficult to measure. The uncertainty of our ability to measure probably can not be overcome until/unless the big crunch is about to happen. If that happens, it will not happen for several billions of years.
2007-02-06 07:36:32 · answer #3 · answered by anonimous 6 · 0⤊ 0⤋
Taking into acount the shape of the Universe.
If u will go acc to M-Theory here is the ans
If u consider ur self as the starting point of the universe then the farthest end of the Universe will be the back of ur head in 3-D.
That gives the the explanation of the infinity of universe.
May this answer help.
2007-02-06 07:54:34 · answer #4 · answered by ADITYA S 2 · 0⤊ 0⤋
If omega is less than one, the Universe is the shape of a sphere, if omega is equal to one, it is the shape of a horse saddle, if it is omega is more than one, it is shaped like a piece of paper.
2007-02-06 08:17:44 · answer #5 · answered by Anonymous · 0⤊ 0⤋