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wiki-user: db0

  • 14 Posts
  • 120 Comments
Joined 3 years ago
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Cake day: June 9th, 2023

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  • db0@lemmy.dbzer0.comtoMemes@sopuli.xyzwat
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    11 days ago

    Well, ok I’m afraid I’m really out of my depth here. It seems to read like the universe is expanding due to an unknown force acting on the 4th dimension (like the air coming in the balloon), but I can’t imagine what that would be. I always understood that the universe expansion is simply leftover momentum from the big bang


  • db0@lemmy.dbzer0.comtoMemes@sopuli.xyzwat
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    11 days ago

    I don’t know much about astrophysics, but it seems to me the analogy breaks down. Unlike a balloon, the universe does not move on a medium, so the only way to surmise it’s size is by its edges (i.e. the objects at its farthest edges). So the important thing here is how fast those edges move (the dots, on the balloon) which can never be higher than the speed of light. What am I missing?


  • db0@lemmy.dbzer0.comtoMemes@sopuli.xyzwat
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    12 days ago

    That’s what I meant. Since matter isn’t moving at the speed of light, if we assume the universe expansion is due to the movement of its edge objects, then it cannot expand faster than 2c. If the expansion is happening for a different unrelated reason than the edge objects ofc that’s something else