Our 'region' of the universe is expanding, but there is not a rim or edge to it beyond which there is a void or something that it is expanding into.
Rather, if you were 9/10 of the way to the 'edge' we sense from here, you would NOT note an asymmetry to the region of space you are in, that is, you would not see an 'edge' 10 times closer in one direction than the opposite. Instead, you would sense an 'edge' just like we do from here, at an immense uniform distance all the way around you.
And if you again traveled 9/10 of the way to 'that' edge, and looked around again, you would still be perfectly centered in that region of the universe you could sense from there.
And all of us here, would no longer note you to be in our universe at all . . . .
Beats the snot out of 'Let there be light . . . '
Rather, if you were 9/10 of the way to the 'edge' we sense from here, you would NOT note an asymmetry to the region of space you are in, that is, you would not see an 'edge' 10 times closer in one direction than the opposite. Instead, you would sense an 'edge' just like we do from here, at an immense uniform distance all the way around you.
And if you again traveled 9/10 of the way to 'that' edge, and looked around again, you would still be perfectly centered in that region of the universe you could sense from there.
And all of us here, would no longer note you to be in our universe at all . . . .
Beats the snot out of 'Let there be light . . . '
