ive read that the universe is flat, as opposed to a saddle or a U shape but when I look into how they’re measuring it, I just cant understand.
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To piggyback on OP’s question: I just had a realization that my previous thoughts about the Big Bang have been flawed. I can wrap my mind around an initial “explosion”, but I visualized it exploding in an expanding pattern in all directions simultaneously. That included both up and down, as well as 360°.
Honest question asked from a place of ignorance: why was this so?
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