dark mattergalaxiessupersymmetric field theory/ Universereviewgalactic halopoint-like candidatesstandard model extensionssupersymmetric theoriesdark matter particles/ A9880D Theoretical cosmology A1210D Unified models beyond the standard model A1130P Supersymmetry in particle physics A9850 The Galaxy, extragalactic...
B Dark matter in the universe is believed by some scientists to be a substance that is not easily observed because it does not directly reflect light. Its existence can only be deduced (推理) because of the effect that it has on surrounding matter. In fact, some members of the scientific...
Partly. because it has been very hard to write down a successful theory of MOND or modified gravity. And partly because it turned out that when we turned our microwave telescopes to look at cosmic background radiation (CMB), the light from the early universe, it turned out that, according ...
Dark matter is puzzling because, despite being effectively invisible because it does not interact with light, this substance makes up around 86% of the matter in the known universe. That means, for every 1 gram of "everyday matter" that composes stars, planets, moons and humans, there are ...
The leading theory of dark matter is running out of room to hide. Most of the Universe is missing. The motion of the stars and galaxies allows astronomers to weigh it, and when they do, they see a major discrepancy in cosmological accounting. For every gram of ordinary matter that emits ...
Dark energy– Unknown property in cosmology that causes the expansion of the universe to accelerate Conformal gravity– Gravity theories that are invariant under Weyl transformations Density wave theory– A theory in which waves of compressed gas, which move slower than the galaxy, maintain galaxy's...
Dark matter seems only to interact with the universe as we can observe it through a single physical force: gravity. So, in the case of our invisible black hole, we might have been able to notice it by seeing how the light coming to us from a certain section of the sky was bent ...
Dark matter is a mysterious invisible substance that makes up around 85 per cent of all the matter in the universe. Scientists know it's there only because it exerts a powerful gravitational force on visible stars and galaxies, influencing the way they move. Since the 1930s, evidence has gro...
宇宙暗物质dark_matter_intro讲解 DarkMatterintheUniverse?A(mostly)PictorialIntroduction EdwardDawUniversityofSheffield ASpiralGalaxy-NGC3198 InUrsaMajor(GreatBear/Plough/BigDipper)constellation.Distanceis9.1Mpc,or30millionlightyears.Forcomparison,distancefromEarthtothegalacticcentreisafactorof~1000less,~30thousand...
Normally, astronomers think such gravitational anomalies are caused by dark matter— a mysterious type of matter with unknown origins that does not react with light and supposedly makes up around 27% of the universe's mass. However, based on ...