Energy = Mass * Constant (the speed of light) squared
I decided to listen to Steven Hawking for 3 hours last night. It was a 3 part series, narrated by him (not always in his voice) based on his 2010 book, The Grand Design. From what I can tell the book is a treatise as to his position that a god is not necessarry in order to have a created universe. I picked it up in the second and third hour then watched the first hour when it repeated. Had I seen the first hour first, I probably would not have bothered with the other two.
Hawking states that 3 things are necessary for a universe to be created: mass, energy, and space. In further explaination, using Einsteins formula from his Special Theory of Relativity, he rationalizes that Energy and Mass are essentally the same, therefore only two things are necessary for the Big Bang to happen, energy and space. He further explains that since energy is not lost, but converted to negative energy, that the universe is made up of equal amounts of positive and negative energy. This leads him to the conclusion that the (actually our) universe adds up to Zero (or nothing) and nothing need no intelligent designer to exist.
How did Hawking get from E=MC2 to E=M?