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Physics, Astronomy & Cosmology / Re: How do we know the Universe is expanding, and expanding into nothing?

« on: 11/07/2020 22:57:48 »

I keep hearing the Universe is expanding in comparison to like a balloon inflating, the evidence an apparent red shift observed of matter. We do not observe space red shifting we only observe light/matter interaction red shift, so how from that do you conclude the Universe is expanding when that makes no logical sense or is a any sort of rational thought?
I read this morning that it is now expanding faster than we first thought and soon and the Universe will become cold and the Universe will end, how on Earth doe's any one derive that ?

I believe I can explain it in a simple way. the universe is expanding (the distance between two objects) this can be shown with the classroom experiment showing gravity. if you have a sheet pulled then place a ball on it. this will create an example of a gravity well, but at the same time it will show the expansion of spacetime. while the ball pulls on the fabric it will cause the rest of the fabric to slightly expand. for every force there is an equal and opposite  force.

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Physics, Astronomy & Cosmology / Re: Why would the universe expansion slow down depending on mass density?

« on: 11/07/2020 22:41:51 »

I'll cite this "  if the density exceeds a certain critical value, the gravitational pull of each mass on every other mass will slow down the expansion of the universe "

I came here to discuss this theory but from a different perspective. The problem comes down to a simple problem, why is the universe expanding. I believe I have figured this out it. it will also answer your question. Think of it like this. gravity pulls/ compresses the fabric of the universe. like we where taught in school a ball on a sheet will explain. if you place a ball on a sheet it will make a simulated gravity well, but at the same time it will cause the fabric around the well to expand.  every force has an equal and opposite force, there for as gravity pulls the fabric it must also push it. the speed of expansion is equal and opposite of the force of gravity. this is also why the expansion is not the same everywhere, because gravity is not the same everywhere. this is also why I disagree with the dark matter explanation. think if you grab a sheet and compress a portion of it the rest of the sheet must expand too. the speed of expansion should be a directly related to the forces of gravity pulling on it. I am not highly educated, and am unable to understand the math, but I fully understand forces and there effects. I am just unable to put it into numbers