Citat:
În prealabil postat de apophis
Daca Pamantul e plat nu trebuie sa aiba niste margini? Orice lucru plat are margini.
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"If the density of the universe exactly equals the critical density, then the geometry of the universe
is flat like a sheet of paper, and infinite in extent."
http://map.gsfc.nasa.gov/universe/uni_shape.html