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Mater in Space.
How do scientists prove that mater is not infinity? That there is a certain number of planets and stars on our universe?
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**We don't know, but it's assumed. If there was another one, it would be so far away it doesn't matter much to us.**
When you look into space, you're looking back in time. If you look back far enough, you can see the Big Bang. Scientists have been able to see areas they think are very near the Big Bang, and so they know about when it happened. They also have observed how fast the universe is expanding. With this info they're easily able to guess how much stuff is in the universe.
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Well because of the very nature of infinity, you cannot have an infinite amount of something in the real world. It is simply a mathematical that was made up to make equations work right. Now, the number of stars and planets in the universe is probably incredibly large, and given the fact that we cannot travel faster than light, might as well be infinite, since we will never reach the end, but it is still not infinite.
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