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 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.
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 ?