Burns
Avatar of War Slayer
Think of it in these terms. We know we are moving away from the center of the universe and have been for a while. Whats more, there are galactic clusters moving from it in all vectors from the center and we are only able to observe the ones moving our general direction because of this. Here is the situation:
Galaxy on opposite side of center <===== moving 60% of C from center ====+ Center of Universe +============ moving 60% of c from center ====> Our galaxy
Combined relativistic velocity is greater than C so no light from either galaxy ever reaches the other. We know this occurs from observation (distant galaxies just on the cusp moving at enough of an angle that they essentially achieve this state have been documented), but we are not clear of all the implications aside from the fact that we are not getting burned alive by the collective light of every star in the known universe. Fun mental exercise, if the expansion of the universe were to slow down (its not for reasons unknown currently hand waved by "dark energy" theories) the night sky would become brighter and brighter until the ambient temperature of most of the know universe rose to the point where we all melted (over a cosmic scale of time mind you). Overall point is that velocity greater than C technically exists in relativity, we just don't know what the ramifications are fully.
Also keep in mind that any singularity (black hole) has an event horizon where the acceleration of gravity is the same value as C, which implies that the acceleration of gravity beyond that point would be greater than C. We mostly do not have a means to observe the particulars, but there are singularities out there that actually eject some forms of energy due to rapid rotation speeds. So while we cannot measure a velocity against a static point in the universe (Heisenberg and Schoedinger's Wave Theorem explain this at length) we have a decent approximation when it comes to singularities because their center is static in relation to the whole and there is clearly a force capable (at least theoretically) of FTL velocities beyond the event horizon.
From the explanations I have seen: What we see is a light cone into the past. We can only see stars that are inside that light cone. Any light outside that cone can not reach us because it's already too far away, not specifically because it's moving away from us.
What you are saying doesn't seem to jive with this:
Edit: It's been a year, so rewatched the video and reread the post. The video is mostly saying the same thing. Outside of the video stating that parts of spacetime are moving at speeds greater than the speed of light, to which the light form distant galaxies can not pass. It still does not support infinite stars in our universe though.
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