Question

How can our universe be flat?

Answer 1

our universe has no shape that means that it is 4 dimensional and has no end and extends to infinity

Answer 2

1. You say the that the observational universe is flat how can this be if we live in 3D.

• I cannot wrap my brain around the meaning of a FLAT universe.
• I've read hundreds of definitions on the thing and cannot make sense from it.
• he ant on the balloon does not make sense to me
• Because there is space above and below the ant on the surface of the balloon.
• If the universe is physically flat, then what is above and below it?
• I have tried and tried to understand what 'flatness' means but it never makes sense.
• Space and the things in it are found in every direction so how is the universe flat?
• Is it flat like a coin or a tyre or flat like a sheet of atoms?
• Does it actually just mean that if the universe was filled with adjacent cubes,
• ll the corner angles of all the cubes would equal 90degrees? or something like that?