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inventionnerd t1_j1i2ctp wrote

Reply to comment by ZincMan in Did you know it will still take 46 billion years to cross the universe at the speed of light? 65 mph = 4.8 * 10^17 years! by NotAndroid545

It wasnt centralized though. Basically the current theory is the universe is/was always infinite and is just a bigger infinite now. The mass might have been far denser and closer together before the space expansion, but it wasnt in like a 1 mm radius sphere or something. It was always in an infinitely sized space.

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gtga1976 t1_j1i4b96 wrote

That's space itself though yes? I assume the mass within space shows differential in red shift relative to earth based on some other central point? Or are you saying everything is travelling away from earth at the same speed?

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inventionnerd t1_j1i8w3u wrote

Not quite sure what you're saying, but no, everything isn't traveling from Earth at the same speed. But I'm saying wherever you are in space, you'd see the same frequency if you look far enough as you see on Earth? So, our observable universe is about 46b lightyears in radius. To us, we're at the center right? We see a redshift of x when looking straight "up" to the very edge of our universe. If we can teleport to this this spot instantly and look around us, we'd still see a universe of about 46b lightyears in radius (just would be mostly different things as you could see from Earth. If you then looked straight "up" from this spot, you'd still see the same redshift of x as you saw when you looked at your current spot from Earth. So, how could you ever tell what the central point is if everywhere you go, you'd have the same size observable universe and same shifts?

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