-------------------------------------- The universe is magical and mysterious, and humans are ever looking to understand how it works and what makes it tick. One way our brains make sense of things is with maths, statistics and numbers, helping give us perspective on all we know, from the tiniest specs of matter to the gargantuan scale of space and all the wonders it holds. Today we are going to take you on an adventure in numbers, showing you some of the most important numbers in science, starting small and intricate, working our way up to dizzy awe inspiring numbers. Lets go.
So there is only one place to start and that is zero.
Zero (number) - Total energy in the universe (positive negative balance).... Matter, antimatter and light are all classed as positive energy, so you would think that with so much light and even explosions from all the stars in the universe, energy would be positive in balance. But as the gravitational energy between atoms and objects are classed as negative this actually cancels out the positive energy.
Stephen Hawking explained it like this - “ "Two pieces of matter that are close to each other have less positive energy than the same two pieces a long way apart, because you have to expend energy to separate them against the gravitational force that is pulling them together," Since it takes positive energy to separate the two pieces of matter, gravity must be using negative energy to pull them together. Thus, the gravitational field has negative energy. In the case of a universe that is approximately uniform in space, one can show that this negative gravitational energy exactly cancels the positive energy represented by the matter. So the total energy of the universe is zero”
Let's not waste any energy wrecking our heads over this….