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Dark matter is a hypothetical form of matter that does not interact with light or electromagnetism, but only with gravity. It is inferred by its gravitational effects on galaxies, clusters and the cosmic microwave background. Learn about its history, evidence and possible candidates.
Aug 28, 2024 · Dark matter is a component of the universe that exerts gravitational force but emits no light. Learn about its existence, distribution, types, and detection methods from Britannica's experts.
- Adam Riess
- Dark matter is a component of the universe whose presence is discerned from its gravitational attraction rather than its luminosity.
- Dark matter makes up 30.1 percent of the matter-energy composition of the universe. The rest is dark energy (69.4 percent) and “ordinary” visible m...
- Dark matter’s existence was first inferred by Swiss American astronomer Fritz Zwicky, who in 1933 discovered that the mass of all the stars in the...
- Two varieties of dark matter have been found to exist. The first variety is about 4.5 percent of the universe and made of the familiar baryons (i.e...
Matter is defined as any substance that has mass and occupies space. But there’s more to the universe than the matter we can see. Dark matter and dark energy are mysterious substances that affect and shape the cosmos, and scientists are still trying to figure them out.
4 days ago · Dark matter is that invisible glue that keeps stars, dust, and gas together in a galaxy. This mysterious substance makes up the majority of a galaxy's mass and forms the foundation of our Universe's structure. Dark matter is still one of the greatest mysteries of science. Credit: NASA/JPL-Caltech
Aug 6, 2024 · What is dark matter? Dark matter expert Q&A. How do we know it exists? Where does it come from? How do we study dark matter? Additional resources. Dark matter constitutes over 80% of...
Learn about the invisible and mysterious substances that make up most of the universe: dark matter and dark energy. Find out how CERN experiments may help reveal their nature and origin.
May 9, 2018 · Dark matter is a type of matter that interacts with gravity but not with light, and makes up most of the material in the universe. Learn about its role in galaxy formation, its possible nature and how it might be detected in this article by a theoretical physicist.
