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bland
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Why can't the CMBr 'wall' that is as if we were in the middle of a sphere surrounded by it, be used as a reference point for absolute motion in space?
jerromyjon said:Because that would imply or assume you were in "the middle" of something, If you can't prove it's that way in any consistent fashion it is pointless as a "star map" if that is what you were asking...
But "seems to me" is not a reason, it is just restating your assumptions. The CMBR is just part of the "terrain" of the universe. You certainly can measure your velocity relative to it (or rather the local frame where it is isotropic), but that is no more "absolute" than measuring your velocity relative to any other piece of "terrain".bland said:I suppose I would answer that Mt Everest, or any other point in the Universe may or may not be in motion but the CMBr 'wall' seems to me that it is not in motion.
CMBr stands for Cosmic Microwave Background radiation. It is a faint glow of light that fills the universe and is left over from the big bang.
CMBr was first discovered in 1964 by Arno Penzias and Robert Wilson through their work with a radio telescope. They were awarded the Nobel Prize in Physics for their discovery in 1978.
Absolute motion refers to the movement of an object in relation to a fixed point in space. It is the true measure of an object's movement, regardless of any outside influences or frames of reference.
CMBr can be used to measure absolute motion because it is a constant and uniform background radiation that permeates the universe. By studying the slight variations in CMBr, scientists can determine the absolute motion of objects in the universe.
Studying CMBr and absolute motion can help us better understand the origins and evolution of the universe. It also allows us to make more accurate predictions about the behavior of objects in the universe, such as galaxies and clusters of galaxies.