This concept always fascinates.
We're 14 billion light years from the edge of the Universe. Does that mean the Universe in 28 billion light years in diameter?
What lies 14 billion light years plus 1 inch from my location?
We aren't at the center of the Universe. We aren't even at the center of our own galaxy.
Yet, galaxies are flying away from us at increasing speed in every direction. The last star of the farthest are about 14 billion light years away. Doesn't that, by definition, put us at the center?
There is no Center.
You are the center of your Universe. I am the center of mine.
“The last star of the farthest are about 14 billion light years away. Doesn’t that, by definition, put us at the center?”
In an infinite universe, any point in space would be the center if you were standing there, from your perspective.
The observable universe is about 90 billion light years in diameter. If spacetime is as flat as it appears to be, the whole universe is many orders of magnitude larger if not actually infinite.
Technically we are at the center of our universe. The edge of the Universe is defined by the beginning of time as we know it. The more distant an object is, the more time has passed as the light from the object travels to reach us. Right now it looks like there is a curtain of glowing gas roughly equidistant corresponding to a time roughly 14 billion years ago. This represents the point in time corresponding to the universe cooling below the temperature of luminous plasma. The inference is this corresponds to about 385,000 years after the Big Bang, the implied beginning of our universe.
All theory of course, but works fairly well for the nonce. So in a funny sort of way, the Big Bang and Cosmological Inflation as well as Relativity have unwound the Copernican Revolution, we're back in the center of the universe again. Of course, no matter where you are, it looks the same. You are always in the center of the universe you perceive. Weirdness.