One theory about the universe says that it has no boundary, no edge. This theory was proposed by Stephen Hawking and Jim Hartle. It says (81) that the universe has a finite area, but no one travelling through the universe would ever come to a point that the universe stops. This (82) would be similar to journey over the surface of Earth. We can travel (83) around the world without reaching boundaries nor edges, yet the area of (84) the planet is finite. This no boundary theory predicts what the universe (85) does have a beginning and an end, but it differs off the traditional (86) Big Bang theory in some ways. The traditional Big Bang theory assuming that the beginning of the universe was a singularity, a point (87) of infinite density and infinitesimal volume to where space and time (88) became distorted. Instead, Hawking and Hatle predict that the beginning of the universe could likened to the North (89) Pole of the Earth. If degrees of latitude on the Earth could be compare to time, it could be said that the universe began (90) at the North Pole. However, the North Pole in itself is just an ordinary point on Earth.