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Cake day: June 27th, 2025

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  • Preface: I am not a physicist- just a gal who’s read a lot of physics/pop science, so take this with an extra-large grain of salt.

    My understanding is that our universe has no center point in 3D space. The common analogy is the (idealized) 2D surface of an expanding balloon- for any observer at any arbitrary point on that surface, the balloon would appear to be spreading out equally in all directions, as if the observer were standing at the center of the surface.

    This is just what we see from our observations: at a large enough scale, the universe appears to be accelerating away from us equally in all directions. Applying the Copernican principle, we can reasonably assume that other observers elsewhere would see the same.

    In short, there is no center and/or everywhere is the center of the universe.