What is dark energy? One of science's great mysteries, explained
Dark energy makes up roughly 70 percent of the universe, yet we know nothing about it. Around 25 percent of the universe is the equally mysterious dark matter, leaving just five percent for everything that we can see and touch -- matter made up of atoms.
Dark energy makes up roughly 70 percent of the universe, yet we know nothing about it. Around 25 percent of the universe is the equally mysterious dark matter, leaving just five percent for everything that we can see and touch -- matter made up of atoms.
