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).
Dark Matter & Dark Energy - Science@NASA
Discover the universe's building blocks – matter, dark matter, and dark energy. Everything scientists can observe in the universe, from people to planets, is made of matter. 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 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.
Dark matter - CERN
Dark matter candidates arise frequently in theories that suggest physics beyond the Standard Model, such as supersymmetry and extra dimensions. One theory suggests the existence of a “Hidden Valley”, a parallel world made of dark matter having very little in …
Shining a Light on Dark Matter - NASA Science
The invisible form of matter, called dark matter, makes up roughly 30% of the universe’s total mass. Its gravity drives normal matter (gas and dust) to collect and build up into stars, galaxies, and massive galaxy clusters.
What is dark matter? | Space
2024年8月6日 · Dark matter is entirely invisible, emitting no light or energy, making it undetectable by conventional sensors and detectors. Scientists believe that the key to its elusive nature lies in its...
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 Matter - Kavli Institute for Particle Astrophysics and …
Over a quarter of the Universe is composed of dark matter, which reveals its presence through gravitational effects on systems ranging from individual galaxies to the entire cosmic web. At KIPAC, we aim to understand the nature of dark matter by studying its behavior in diverse cosmological settings.
Dark matter candidates and searches - ScienceDirect
Astrophysical observations suggest that most of the matter in the cosmos consists of a new form that has not been observed on Earth. The nature and or…
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