Is there any randomness in the background radiation? My understanding is by studying that pseudo-random looking background radiation we can answer all sorts of questions about the beginning of the universe and the ending of it. Am I wrong? How else are we able to make the accurate predictions about the end of the universe at the largest scales?
RE: Why is the universe increasingly predictable at larger scales?
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Why is the universe increasingly predictable at larger scales?
Yes. The CMB is grainy due to randomness. The patterns are not perfect because of it.
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Why are we able to find the smallest planck length of the universe and the universe doesn't expand smaller, but it does expand bigger? I don't understand why it only expands in one dimension and not all? Why isn't the universe expanding smaller and getting bigger?
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The cause of the universe's expansion is under intense investigation by physicists and cosmologists. Recent episodes of PCS Space Time have been covering current theories. I highly recommend this YouTube series.
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