Is the universe infinite?
I believe that the universe is infinite because it is constantly expanding. This means that the universe is limitless in the amount of space it takes up. In 1915, Albert Einstein developed his theory of General Relativity, to which it was then applied to the whole universe. The theory predicts that either the universe is expanding or contracting. Well, Edwin Hubble measured the velocities of many galaxies and found that nearly all of the galaxies are moving away from us. About 10,000 years ago, Kapteyn"s Star was 7 light years away. It is now 13 light years away.
My second reason for stating that the universe is infinite is because of its shape. Astronomers have identified the universe as being flat. An expanding universe corresponds to a flat one. A flat universe just means that the parallel lines always run parallel, meaning that at no given point do they intersect. and that the angles of a triangle add up to 180 degrees. The two dimensional equivalent to that is a plane, which is infinite in all given directions.
My final reason for stating that the universe is infinite is because there is no possible way to explore beyond the observable universe. Sure, some may state that it is finite, but if its constantly expanding, how can we say that. There is no guarantee that the universe may stop expanding, and if it doesn"t, it"ll end in what is known as the Big Freeze. The Big Freeze is the result of an ever expanding universe. We live in an open universe, so there will be no reversal of its expansion, otherwise creating the Big Crunch. Saying that the universe is finite without being able to see beyond what it actually is is very simple minded.
In conclusion, the universe is infinite because it is constantly expanding, its plane shape, and the fact that we cannot see beyond our observable universe. The universe is capable of expanding to an infinite size, and infinite objects continue on forever, just as that of the number pi. Its current size is not finite, because it will keep reaching greater sizes. It won"t stay that size forever. "Studies have shown that 90% of error in thinking is due to error in perception. If you can change your perception, you can change your emotion and this can lead to new ideas.
-Edward de Bono
I thank Pro for instigating this debate, & I accept the challenge.
- Infinite: limitless or endless in space, extent, or size; impossible to measure or calculate [*].
LeCorbusier forfeited this round.
- Due to limitations in time, I’ll postpone my case till next round. Sorry :)
LeCorbusier forfeited this round.
Joseph Silk: We don't know. The expanding Universe theory says that the Universe could expand forever [that corresponds to a 'flat' Universe]. And that is probably the model of the Universe that we feel closest to now. But it could also be finite, because it could be that the Universe has a very large volume now, but finite, and that that volume will increase, so only in the infinite future will it actually be infinite.
ESA: It sounds like a game of words, is it?
Joseph Silk: No. We do not know whether the Universe is finite or not. To give you an example, imagine the geometry of the Universe in two dimensions as a plane. It is flat, and a plane is normally infinite. But you can take a sheet of paper [an 'infinite' sheet of paper] and you can roll it up and make a cylinder, and you can roll the cylinder again and make a torus [like the shape of a doughnut]. The surface of the torus is also spatially flat, but it is finite. So you have two possibilities for a flat Universe: one infinite, like a plane, and one finite, like a torus, which is also flat.
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