One of the mysteries of the English language finally explained.
(in some cosmological theories) non-luminous material which is postulated to exist in space and which could take either of two forms: weakly interacting particles (cold dark matter) or high-energy randomly moving particles created soon after the Big Bang (hot dark matter).
- ‘Orbital analysis can give astronomers valuable clues about the amount and distribution of dark matter in the galaxies.’
- ‘The substance known as dark matter seems to create ghost galaxies that mirror the ones we can see, astrophysicists said Wednesday.’
- ‘It is most likely that particle physicists will find dark matter, if indeed it exists in particle form.’
- ‘Ordinary matter and dark matter loosely track each other in space, but not in a one-to-one ratio.’
- ‘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.’
- ‘According to most theories of dark matter, it is too energetic to have been created by the annihilation of dark matter particles.’
- ‘The Collisionless Boltzmann Equation defines a galaxy as a self-gravitating system of stars and particles of dark matter.’
- ‘The ratio of dark matter to ordinary matter is expressed as a ratio of nuclear binding energies and predicted to be about 5.’
- ‘Among the many mysteries in the universe is the dark matter in galaxies and clusters.’
- ‘For years, ancient humans knew of the existence of dark matter in the universe but could not explain its presence or what it did.’
- ‘Most galaxies have more of the mysterious dark matter than ordinary, visible matter.’
- ‘Most astronomers believe that dark matter exists - even though it has never been seen, and no one knows what it might be.’
- ‘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.’
- ‘So far the most promising candidate for dark matter is the neutralino, because they interact weakly.’
- ‘Nobody knows what dark matter is, but observers knew there is five times as much dark matter as visible matter.’
- ‘If the infall of the ordinary matter were not stopped, there would be no visible galaxies, only black holes surrounded by dark matter.’
- ‘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.’
- ‘Identification of the different energetic particles, including dark matter, is done by pulse shape discrimination.’
- ‘Physicists say that most of the universe consists of dark matter.’
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