How big is the universe?

[Anomalocaris]

Size of the universe:

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Now use the browser zoom until the bars reach the edges of the universe and read off the zoom factor.

But how do I get out to the edge of the universe to verify the bars are there?  What happens if I slip and fall off the edge when I get there

What happens if I keep cranking that zoom knob and the bars eventually comes back to hit in the back?