Flat universe may be the new flat Earth

May 19, 2009 | Source: New Scientist Physics & Math

The probability that the universe it flat may only be 67 percent because WMAP observations of the density of matter and dark energy in the early universe may have been misinterpreted, says Joseph Silk at the University of Oxford and colleagues, based on a new study.

The universe could also be positively curved (like the surface of a sphere) or negatively curved (saddle-shaped).