Dark Matter & Dark Energy - NASA Science
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. Learn more.
Dark matter - Wikipedia
In 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 present than can be observed.
Dark matter | Definition, Discovery, Distribution, & Facts | Britannica
2024年11月1日 · 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).
What Is Dark Matter? | NASA Space Place – NASA Science for Kids
6 天之前 · 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.
Dark matter - CERN
Dark 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 ...
Dark Matter - NASA Science
Scientists are trying to determine what dark matter is made of, but our current understanding has many gaps. Roman will provide clarity by exploring the structure and distribution of both normal matter and dark matter across space and time.
Hubble Dark Matter - NASA Science
We call this substance dark matter, an invisible form of matter that doesn’t emit, absorb or reflect light, or interact with normal matter. It’s theorized to make up 85 percent of the universe’s total mass, or almost 30 percent of the universe’s combined mass-energy.
What Is Dark Matter? - Nature
2018年5月9日 · 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 ...
Dark Energy and Dark Matter | Center for Astrophysics | Harvard ...
Dark matter makes up most of the mass of galaxies and galaxy clusters, and is responsible for the way galaxies are organized on grand scales. Dark energy, meanwhile, is the name we give the mysterious influence driving the accelerated expansion of the universe.
The dark side of cosmology: Dark matter and dark energy | Science …
2015年3月6日 · The discovery of the dark matter particle would resolve a long-standing mystery in astronomy, provide insights into dark matter’s role in galaxy formation and structure, and be the first signature of new physics beyond the Higgs.