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Hi Alex.
What a conundrum! Is the Universe infinite in size? Who knows.
The age of the Universe is supposedly around 13.73 billion years.
I'm guessing we are talking about the observable Universe. How do they come up with the figure of 93 billion light years diameter (or a distance of 46.5 billion light years)? Pure guesstimation.
We don't know how expansion has varied over time and therefore cannot possibly calculate an exact size for the observable horizon.
Then there is the cosmic event horizon at 16 billion light years. Supposedly, light being emitted now from galaxies this far out will never reach us due to their speed of recession.
Regards, Rob
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