What Most of the Universe is Made Of

The universe is filled with a great deal of mass-containing matter. If you had to guess, you'd probably say that most of the mass of the cosmos is made up of objects. Matter, you know. Dogs, planets, stars, and other such things. And you'd be completely mistaken. Most scientists agree that matter makes up only approximately 10% of the universe. Some calculations put the figure at a meager 1%.

Two things are thought to make up the remaining 90% to 99% of the cosmos. Dark matter and dark energy. Dark matter makes up 25% of the universe's mass, while dark energy makes up the remaining 70%. And as we've already shown, we have no idea what dark energy even is.

We don't know what the rest of the universe is exactly, so we don't know how much of it makes up the rest of the universe. It's similar to trying to determine the ingredients used in a cake by looking at the outside. You might be able to get it right with some educated assumptions, but good luck.