An Expanding Universe

[Physman]

Yes! although nature is the essence of us, we are not the essence of nature...

[gokul.er137]

WMAP states that the shape of the Universe within two percent accuracy is flat.

 

I have this particular question in relation with what we are discussing. - Why can't we assume that the early Universe expanded equally in all directions with a velocity of 'c' (max) for about a second or so? Then within a second, wouldn't we get the volume to be 4/3*pi*c^3?

[Physman]

yes those dimensions are correct but the thing is, that that one second would not make up the universe it would only make up a sphere within the now 'flat' universe. (the universe still continued to expand after the first second or so).

[Sisyphus]

WMAP states that the shape of the Universe within two percent accuracy is flat.

 

I have this particular question in relation with what we are discussing. - Why can't we assume that the early Universe expanded equally in all directions with a velocity of 'c' (max) for about a second or so? Then within a second, wouldn't we get the volume to be 4/3*pi*c^3?

 

The universe does not expand outward, or in any direction, and there is no outside. The universe is not a sphere, nor does it have any other 3D shape. The expansion is an increase of space itself but not a movement of objects.

[Physman]

you miss read me there, I am stating that when light travels out in EVERY direction for 1 sec. it will form a 'sphere' of volume that has past. I am only saying that that shape persae is only with in an apparently falt universe.