Does a Flat Universe Have an Edge?

[pivoxa15]

I have read from Universe by Freedman, Kaufmann that our universe is largly flat so it would mean there are edges in our universe. Our universe would be like a flat piece of paper that is continually expanding. A more realistic picture might be a diagram of einstein's fabric of space time which is a flat sheet with spheres of planets sitting on it. But from the same source they stated that the universe does not possesses an edge. I can see that a spherical universe would not possesses an edge but how does a flat thing not have an edge?

 

[EL]

I can see that a spherical universe would not possesses an edge but how does a flat thing not have an edge?

If it's infinite!

 

[Labguy]

Just do a PF search on "Flat Universe" and you will find that this has been discussed several times and flat does not mean flat like paper or a table top. Last posts explaining were within last 10-20 days, maybe even more recent.
EDIT:
Like https://www.physicsforums.com/showthread.php?p=830661#post830661" and
http://www.astro.ucla.edu/~wright/cosmology_faq.html#FLAT".

 

[Chronos]

Agreed, Labguy. 'Flat' merely means the universe has no 'edges' that can 'curl' back. It has nothing to do with whether or not the universe is temporally or spatially infinite.