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In astronomy, dark matter is a hypothetical form of matter that appears not to interact with light or the electromagnetic field. Dark matter is implied by gravitational effects which cannot be explained by general relativity unless more matter is present than can be seen.
9 mag 2018 · Dark matter is a mysterious substance that permeates the universe and exerts gravitational influences, but has no electromagnetic charge. It is inferred from its gravitational effects, but not directly observed. Learn about its nature, origin, and detection from physicists and astronomers.
- Lisa Randall
- 2018
5 mag 2024 · Dark matter is a component of the universe whose presence is discerned from its gravitational attraction rather than its luminosity. It makes up 30.1 percent of the matter-energy composition of the universe and has two varieties: baryonic and nonbaryonic.
- 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...
23 gen 2024 · Dark matter is a mysterious substance that does not interact with the electromagnetic force and gives galaxies extra mass. Learn how researchers detect dark matter from its gravitational effects, what theories propose its existence, and how dark energy affects the universe.
6 giorni fa · 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.
Learn about the mysterious substances that affect and shape the cosmos, and how scientists are trying to figure them out. Explore stories, images, and topics related to dark matter and dark energy from NASA's website.
3 mag 2024 · The current Universe, Planck found, is about 70% dark energy, 25% dark matter and 5% ordinary matter — the stuff of stars, planets and people. Many fates.
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