Naked Science Forum
Non Life Sciences => Physics, Astronomy & Cosmology => Topic started by: MasterStringTheory123 on 23/02/2021 09:44:09
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Here we will talk about how the universe expands faster than light and how it would be observed by inward and outward observers! The question is since the universe expanding faster than light what would an outside observer see when looking at the point of expansion
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Here we will talk about how the universe expands faster than light and how it would be observed by inward and outward observers!
The expansion of the universe is not a speed and thus does is not something that can be compared to a speed such as that of light. Speed is measured in m/sec and expansion in m/sec/mpc.
Another way to put it: The most distant visible objects are increasing their proper separation from us at a rate of over 2c, but the light emitted from those same objects is increasing its proper separation from us at a rate of over 4c, so none of them is outrunning any light.
The question is since the universe expanding faster than light what would an outside observer see when looking at the point of expansion
There is no point of expansion or location where it all once was. This would be material expanding into empty space, which is what a bomb does, but not what the big band does. The big bang happened everywhere, and while almost all objects are nearly stationary in cosmological spacetime, the space between those objects expands over time. This is completely different than claiming that any of the objects are moving at any particular speed through that space. One would correctly say that the peculiar velocity of any large object is no a significantly large speed. The peculiar velocity of our galaxy for instance is about 0.002c, mostly due to the combined gravity of Vega, the Great Attractor, and the Shapley Attractor, in increasing order of mass and distance, but all sort of generally in the same direction.
Anyway, since we do have a nonzero peculiar velocity, there is a difference if you look 'outward' or 'inward' which is better described as 'upsteam' and 'downstream'. If you look downstream, in the direction we're moving, the more distant galaxies look less red-shifted, and more redshifted in the opposite direction. It is from these redshifts, notably that of the cosmic microwave background, that our peculiar velocity can be directly measured.
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"what would an outside observer se?"
Unicorns.
An observer outside the Universe would see unicorns.
Well, OK, maybe they wouldn't- but you will never prove that I'm wrong.
Because nothing can be outside the Universe to do the observing.
And since it's impossible to show that the answer isn't "unicorns" the question isn't scientifically valid.
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The restriction on AC plasma energy to move only within the electromagnetic fabric of space, was necessary at Gods creation to confine the Almighty plasma flash of AC light energy and stop it moving away at the speed of light which would have lead to an infinite dispersion. This restriction still applies today, for if 99.99% of the stars/Sun energy is just blasted off into space which is 99.99% empty, then 99.99% of the energy will arrive at the edge of the universe with nowhere to go except outwards leading to a catastrophic dilution. As the edge of the universe is defined by a known amount of red-shift and the edge is not shining brilliantly, we can deduce that the random T^4 energy law only applies to a tiny number of Wolf Rayet type stars. Stars in the main sequence are not emitted in all directions, as believed by Stefan but only through the magnetic-flux tunnels in space. Thus the Sun beams most of its output directly to the planets and the intervening space is mostly dark. Stars appear as lighthouses, beaming quantum directional light directly to all the planets but mostly their own planets, moons, comets & asteroids.
There has to be a boundary in space [heliopause] between the stars, where the incoming energy exactly balances the outgoing energy. At the edge to the universe where magnetisation ceases the temperature drops to zero from CMB 2.7deg.K
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The restriction on AC plasma energy to move only within the electromagnetic fabric of space, was necessary at Gods creation
We created Gods long before we could understand plasma. then 99.99% of the energy will arrive at the edge of the universe
Not if the space is expanding- and it is.
Do you even science?
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how do you define a outside?