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Definition of dark matter in English: dark matternoun mass nounAstronomy (in some cosmological theories) non-luminous material that is postulated to exist in space and that could take any of several forms including weakly interacting particles (cold dark matter) or high-energy randomly moving particles created soon after the Big Bang (hot dark matter). 〔天文〕（某些宇宙理论用语）暗物质 Example sentencesExamples - So far the most promising candidate for dark matter is the neutralino, because they interact weakly.
- According to cosmological theory, soon after the Big Bang, cold dark matter formed the universe's first large-scale structures, which then collapsed under their own weight to form vast halos.
- Physicists say that most of the universe consists of dark matter.
- The existence of such massive clusters in the early Universe agrees with a cosmological model in which clusters form in a merge of many sub-clusters in a Universe dominated by cold dark matter.
- The substance known as dark matter seems to create ghost galaxies that mirror the ones we can see, astrophysicists said Wednesday.
- Ordinary matter and dark matter loosely track each other in space, but not in a one-to-one ratio.
- Orbital analysis can give astronomers valuable clues about the amount and distribution of dark matter in the galaxies.
- It is most likely that particle physicists will find dark matter, if indeed it exists in particle form.
- For years, ancient humans knew of the existence of dark matter in the universe but could not explain its presence or what it did.
- The ratio of dark matter to ordinary matter is expressed as a ratio of nuclear binding energies and predicted to be about 5.
- If the infall of the ordinary matter were not stopped, there would be no visible galaxies, only black holes surrounded by dark matter.
- The Collisionless Boltzmann Equation defines a galaxy as a self-gravitating system of stars and particles of dark matter.
- Most astronomers believe that dark matter exists - even though it has never been seen, and no one knows what it might be.
- Nobody knows what dark matter is, but observers knew there is five times as much dark matter as visible matter.
- According to most theories of dark matter, it is too energetic to have been created by the annihilation of dark matter particles.
- Among the many mysteries in the universe is the dark matter in galaxies and clusters.
- Identification of the different energetic particles, including dark matter, is done by pulse shape discrimination.
- Galaxies are composed of billions to trillions of stars, as well as gas, dust, and dark matter, all bound together by gravity.
- Theory predicts that there is five times more dark matter than ordinary matter in the universe.
- Most galaxies have more of the mysterious dark matter than ordinary, visible matter.
Definition of dark matter in US English: dark matternoundɑrk ˈmædər Astronomy (in some cosmological theories) nonluminous material that is postulated to exist in space and that could take any of several forms including weakly interacting particles (cold dark matter) or high-energy randomly moving particles created soon after the Big Bang (hot dark matter). 〔天文〕（某些宇宙理论用语）暗物质 Example sentencesExamples - If the infall of the ordinary matter were not stopped, there would be no visible galaxies, only black holes surrounded by dark matter.
- So far the most promising candidate for dark matter is the neutralino, because they interact weakly.
- According to cosmological theory, soon after the Big Bang, cold dark matter formed the universe's first large-scale structures, which then collapsed under their own weight to form vast halos.
- The substance known as dark matter seems to create ghost galaxies that mirror the ones we can see, astrophysicists said Wednesday.
- Identification of the different energetic particles, including dark matter, is done by pulse shape discrimination.
- The Collisionless Boltzmann Equation defines a galaxy as a self-gravitating system of stars and particles of dark matter.
- Orbital analysis can give astronomers valuable clues about the amount and distribution of dark matter in the galaxies.
- Theory predicts that there is five times more dark matter than ordinary matter in the universe.
- It is most likely that particle physicists will find dark matter, if indeed it exists in particle form.
- The existence of such massive clusters in the early Universe agrees with a cosmological model in which clusters form in a merge of many sub-clusters in a Universe dominated by cold dark matter.
- Ordinary matter and dark matter loosely track each other in space, but not in a one-to-one ratio.
- For years, ancient humans knew of the existence of dark matter in the universe but could not explain its presence or what it did.
- The ratio of dark matter to ordinary matter is expressed as a ratio of nuclear binding energies and predicted to be about 5.
- Physicists say that most of the universe consists of dark matter.
- Nobody knows what dark matter is, but observers knew there is five times as much dark matter as visible matter.
- Most astronomers believe that dark matter exists - even though it has never been seen, and no one knows what it might be.
- Galaxies are composed of billions to trillions of stars, as well as gas, dust, and dark matter, all bound together by gravity.
- Most galaxies have more of the mysterious dark matter than ordinary, visible matter.
- Among the many mysteries in the universe is the dark matter in galaxies and clusters.
- According to most theories of dark matter, it is too energetic to have been created by the annihilation of dark matter particles.
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