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Re: The speed of light, etc
This may (or may not) clarify things…
https://science.nasa.gov/mission/webb/big-bang-q-and-a/
And this expands upon it…
https://www.edge.org/response-detail/27054
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What astronomers actually have observed is that distant galaxies all appear to be receding from us, with a speed roughly proportional to their distance. We’ve known this since 1929, when Edwin Hubble drew his famous plot. From this we conclude a few simple things. First, we can get the approximate age of the universe by dividing the distance by the speed; the current value is around 14 billion years. The second and more striking conclusion is that there is no center of this expansion, even though we seem to be at the center. We can imagine what an astronomer would see living in another distant galaxy, and she would also conclude that the universe appears to be receding from her own location. The upshot is that there is no sign of a center of the universe.
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And just to confuse you further
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There is no first moment of time, just as there is no smallest positive number. In physics we have equations and laws of nature that describe how one situation changes into another, but we have no equations that show how true nothingness turns into somethingness. So, since the universe did not spring into existence, it has always existed, though perhaps not in its current form. That’s true, even though the apparent age of the universe is not infinite, but only very large. And, even though there’s no first moment of time, we can still measure the age.
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