The answer is no. All the energy in the universe, "always was, always is an always will be". read more
Using this definition of the Universe: "the Universe is an Isolated System of all existing matter and space considered as a whole, obeying Conservation Law s," the answer must be no. The total amount of energy (mass) in such a system will always remain constant. read more
Matter and Energy: A False Dichotomy Matt Strassler [April 12, 2012] It is common that, when reading about the universe or about particle physics, one will come across a phrase that somehow refers to “matter and energy”, as though they are opposites, or partners, or two sides of a coin, or the two classes out of which everything is made. read more