Dark matter - Wikipedia
WEBIn astronomy, dark matter is a hypothetical form of matter that does not interact with light or other electromagnetic radiation. Dark matter is implied by gravitational effects which cannot be explained by general relativity unless more matter is …
Dark matter | Definition, Discovery, Distribution, & Facts
WEBAug 28, 2024 · dark matter, 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 matter (0.5 percent).
Dark Matter & Dark Energy - NASA Science
WEBMatter 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 …
What Is Dark Matter? | NASA Space Place – NASA Science for Kids
WEB5 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
What is dark matter? | Space
WEBAug 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...
Dark matter - CERN
WEBDark matter seems to outweigh visible matter roughly six to one, making up about 27% of the universe. Here's a sobering fact: The matter we know and that makes up all stars and galaxies only accounts for 5% of the content of the universe! But what is dark matter? One idea is that it could contain "supersymmetric particles" – hypothesized ...
What Is Dark Matter? - Nature
WEBMay 9, 2018 · Physicists and astronomers have determined that most of the material in the universe is “dark matter”—whose existence we infer from its gravitational effects but not through electromagnetic...