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Dark matter

Unsolved problem in physics: What is dark matter? How was it generated? In astronomy, dark matter is a hypothetical form of matter that appears not to interact with light or the electromagnetic field. Wikipedia
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Dark matter from en.m.wikipedia.org
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 ...
Dark matter from science.nasa.gov
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 ...
Dark matter from spaceplace.nasa.gov
Dark matter is stuff in space that has gravity, but it is invisible and isn't like anything else we know about. Dark matter makes up about 27% of the universe.
Dark matter from www.space.com
Aug 1, 2023 · Dark matter is completely invisible. It emits no light or energy and thus cannot be detected by conventional sensors and detectors. The key to ...
Dark energy makes up approximately 68% of the universe and appears to be associated with the vacuum in space. It is distributed evenly throughout the universe, ...
Dark matter from www.britannica.com
Dark matter, a component of the universe whose presence is discerned from its gravitational attraction rather than its luminosity.
Dark matter from www.nationalgeographic.com
The rest of the universe appears to be made of a mysterious, invisible substance called dark matter (25 percent) and a force that repels gravity known as dark ...
Dark matter from www.energy.gov
Dark matter accounts for five times as much of the universe as ordinary matter. However, we know little about it other than that it only interacts with ...
Dark matter from www.esa.int
In the currently popular 'concordance model' of the Universe, 70% of the cosmos is thought to be dark energy, 25% dark matter and 5% normal matter.
Dark matter from esahubble.org
Dark matter is a form of matter that cannot currently be observed directly, but is thought to comprise about 85% of all matter in the Universe.