OSU physicists explain how 2 experiments may upend our understanding of physics Steve Benham, KATU Staff Everything that you can see in the universe is only 5% of what is there. The soil of the earth, the planets, the stars, the galaxies, the electrons, the protons -- all those things, the everyday things, the things we recognize as reality, may not be all that there is. There may dark matter, the unseen something that makes up 27% of the universe. It is believed it drives the formation of galaxies and stars. Dark energy makes up about 68% of everything. It is believed it makes the expansion of the universe go. These are the unseen somethings that are just as real as the wind on your face.