Astronomers and cosmologists and physicists think that there is something called dark matter in the universe, which makes up 23 percent of the universe, and something called dark energy, which permeates the fabric of space-time, that makes up another 73 percent.
Astrônomos e cosmólogos e físicos pensam que há algo chamado matéria escura no universo, o que representa 23% do universo, e algo chamado energia escura, que permeia o espaço-tempo, e forma os outros 73%.