- #1
Jonny_trigonometry
- 452
- 0
The universe can't be fully seen from any vantage point within. We must define what we see (with electromagnetic radiation) as not the universe, but the visible universe. This is merely a portion of the universe itself. Most matter in the universe is embedded in space that is moving away from our region of space faster than light speed (mainly, matter very far away). This is around 14 billion light years from our viewpoint, roughly along any radial line from the Earth (provided Earth is defined as our viewpoint). In a way, you could call it the "event horizon" of the gravitational potential well that we are within (in theory). If we looked at our position in the universe as being in a potential well, then the universe isn't expanding (or at least the visible universe), it is all falling toward a center, but not nessisarily according to the laws of gravity since the even horizon is so large. It is possibly a much weaker force, and perhaps compliments gravity like how magnatism compliments electricity (which would be a dream come true for a TOE). The point is, picture our planet, better yet our solar system, better yet our galaxy and neighboring galaxies as all reletively at rest respect to each other (but not fully as it would imply that they are all at absolute zero). They are all influencing each other and dynamically orbiting each other very slowly, and chaotically. Now just think of speeding up their rate of time, and viewing them as particles with vibration about an equilibrium, (the center of mass of the system). Suppose this whole system is influenced by the center of mass of a much more massive system, say, the center of mass of the entire universe (assuming the universe is finite), or maybe just a humungusly massive black hole; then like systems that are closer to the center are being pulled harder, and systems further away are being pulled less. A region closer to the center is moving with a higher velocity toward the center than we are, therefore it appears to be moving away from us, and a region further away from the center than we are is moving toward the center at a velocity lower than ours, therefore it appears to be moving away from us. Therefore, from our region of space (which contains our local galaxies), it would appear as if everything (like systems in other regions of the universe) is moving away from us. Not just that, but also fits the model that things further away will be moving faster away than things not as far away. frames at our radius would have no red shift caused by the curvature of space, but there would still be redshift and blueshift from movement within space. You may wonder, why we haven't reached the center already, well in general reletivity, there is more space in a region more toward the center of a black hole than there is in a region further away. Who knows how much we all (and our surroundings) have shrunk in the time it took to read this? Keep in mind, there must be a universal center of mass if the universe is finite, if infinate, i don't see why this can't work givin that it's a huge mass that our observable universe is stuck inside (one of an infinate). I'm just throwing seeds.