To date the presence of Dark Energy, has remained a mystery. This is solved on the basis of fundamental unit of energy, Planck's constant, from which space-time itself, the forces of nature including gravity, and all particle physics can be derived. This is achieved on the on the basis of the speed of light and classical geometry. In the first instance new research points to a definitive answer to the presence of space time and the value of Hubble's constant. Here we invite open access research and discussion to probe the mysteries and very nature of Dark Energy, and the origins of all the aspects of Nature including the laws of thermodynamics.