Dark energy makes up some 68% of the universe, according to the Standard Model.ĭark matter is invisible it doesn’t emit, reflect or absorb light or any type of electromagnetic radiation such as X-rays or radio waves. Atoms make up only somewhere around 5% of the universe, according to a cosmological model called the Lambda Cold Dark Matter Model (aka the Lambda-CDM model, or sometimes just the Standard Model).ĭark matter isn’t the same thing as dark energy. It isn’t ordinary atoms, the building blocks of our own bodies and all we see around us. What is it? It’s a bit easier to say what it isn’t. What is dark matter?ĭark matter is a mysterious substance thought to compose perhaps about 27% of the makeup of the universe. They believe dark matter pervades our universe, but they don’t know what it is. What is dark matter? Since the 1930s, astrophysicists have been trying to explain why the visible material in galaxies can’t account for how galaxies are shaped, or how they behave.
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