How to use dark matter in a sentence

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Sentence Examples According to most theories of dark matter, it is too energetic to have been created by the annihilation of dark matter particles. 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. Most galaxies have more of the mysterious dark matter than ordinary, visible matter. They discussed the understanding of dark matter by the use of gravitational lenses. The CPA was established by the National Science Foundation expressly to study dark matter. This gas forms part of a gigantic system of hot gas and dark matter that defines the cosmic landscape. Well, what you can see are the gravitational effects, both of dark matter and of the dark energy. So far the most promising candidate for dark matter is the neutralino, because they interact weakly. The substance known as dark matter seems to create ghost galaxies that mirror the ones we can see, astrophysicists said Wednesday. 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 Collisionless Boltzmann Equation defines a galaxy as a self-gravitating system of stars and particles of dark matter. Nobody knows what dark matter is, but observers knew there is five times as much dark matter as visible matter. Among the many mysteries in the universe is the dark matter in galaxies and clusters. Theory predicts that there is five times more dark matter than ordinary matter in the universe. Ordinary matter and dark matter loosely track each other in space, but not in a one-to-one ratio. Also, the next vibration of the string includes a photino or particle which may make up most of the dark matter in the Universe. This finding is consistent not only with inflation but with the existence of dark matter. Show More Sentences It was hoped that this dark matter would be mostly in the form of small stars called red dwarfs. For astrophysicists, dark matter has proved to be an elusive and mysterious substance. And that's already in the right ballpark for the observed amount of dark matter out there. What if all the dark matter during the first few minutes after the big bang had been dark ordinary matter? The background noise should be homogeneous, while the dark matter signal should show the annual modulation. If the infall of the ordinary matter were not stopped, there would be no visible galaxies, only black holes surrounded by dark matter. Most of this baryonic dark matter is expected to exist in the form of gas in and between the galaxies. Steve Petranek and I talked about dark matter, dark energy and gravity. Accounting for dark matter is crucial, and searching for it spans the fields of cosmology, subatomic physics and astrophysics. If stable, this particle could well account for the missing dark matter of the Universe. Today, most physicists think that dark matter is made of a type of subatomic particle that, to date, has never been detected in the laboratory. Most of the mass in a spiral galaxy is in an unseen component called dark matter. Like dark matter and dark energy, therefore, the anthropic principle is still grinning from the sidelines, taunting physicists to explain it. The trouble is, dark matter and dark energy are incredibly difficult to study. Not only that, they are a rich environment for galaxies, hot plasma, and dark matter. The presence of dark matter is determined by its gravitational influence upon luminous matter. They theorize that dark matter may actually comprise most of the mass in the universe. Some of the invisible dark matter that is missing from the Universe may be massive dark bodies such as planets, black holes, asteroids or failed stars. The cutoff energy represents the mass-energy of the putative dark matter particle. Instead, dark matter is its own antimatter, so any pair of particles that meet will destroy each other. Show More Sentences The accretion rate integrated over time is represented in red for the dark matter and blue for gas. The density parameter is, in turn, a measure of just how much normal matter, dark matter and dark energy there is. Physicists say that most of the universe consists of dark matter. The search for dark matter is a prime example of a synergy within subatomic physics. It cannot accommodate dark matter, and the origin of light neutrino masses is problematic in many theories. This led to the proposition that most of the mass in a galaxy was low luminosity mass of some kind, and this invisible mass was called dark matter. Astrometric results are the basis used to calculate the distribution of speculated dark matter in the galaxy. A dark matter halo appears to dominate the mass, although the nature of this dark matter remains undetermined. Fundamental to the structure of the Universe is the existence of dark matter and dark energy. One possible explanation of dark matter is that it consists of supersymmetric particles. On large scales like that of clusters of galaxies, gravitational lensing indicates that the dark matter is smoothly distributed, on the average. The show tackles the esoteric subject of dark matter and dark energy, which together make up ninety-five per cent of the known universe, and which are only scantly understood. He speaks to public and scientific audiences, and finds that both groups pepper him with questions about everything from black holes and wormholes to dark matter. From blazars to thunderstorms, from dark matter to supernova remnants, catch the highlights of NASA Fermi's first five years in space. As important, the same pattern is visible wherever AMS happened to be pointing as it orbited Earth. This sits nicely with the notion that dark matter is strewn more or less evenly across the universe. And the universe appears to be permeated by dark matter that can be sensed only by seeing its effect on visible matter, and dark energy, which is even more mysterious. One of the earliest theories of dark matter was that it consists entirely of compact celestial objects such as planets, dwarf stars, and blackholes. By combining calculations with observational data, Dr. Freese reported that she had eliminated the last shred of possibility that the dark matter is ordinary, baryonic material. If the result continues to withstand scrutiny, it would appear to be evidence for an exotic new sort of fundamental particle, known as an axion, that could also be a type of dark matter. The experiment itself is simple. Some theories of supersymmetry predict that the LHC should produce dark matter particles. Show More Sentences Finally, astronomers can also map out the distribution of dark matter in galaxies and clusters of galaxies by looking at their 'gravitational lensing' of yet more distant objects. To see which bits of it are dark matter simply requires superimposing the known pattern of visible matter. Doing so is instructive, as Dr Massey's colleague Nick Scoville reported to the meeting. It will investigate a wide range of physics, including the search for the Higgs boson, extra dimensions, and particles that could make up dark matter. Many physicists think this dark matter is made largely of neutralinos. That neutralinos feel gravity but not electromagnetism makes them hard to detect. On the other hand, simulations predict that the bar could stop much before corotation, either because of a late galaxy morphology without bulge, or because of the braking of the dark matter. Some progress has already been made on the nature of dark matter. Galaxies are mostly vast stretches of dark matter and interstellar gas. The cosmology and gravity programs made great progress in the study of dark energy and dark matter in the universe, and nanoelectronics program members emerged as global leaders in the leading-edge field of spin electronics. Cosmologists try to answer many questions on the formation of the universe, the causes of space phenomena or, again, the source of such energies as the dark matter. This must be attributed to some form of dark energy which, unlike the dark matter referred to above, acts like a negative gravitational field, tending to make all matter move ever faster apart. The axion is a candidate particle for the cold dark matter that constitutes a large fraction of the mass of the Universe. Along with electrons and positrons, dark matter annihilation should produce other signals like extra antiprotons, gamma rays and radio waves. Nearly everything we know about dark matter so far comes from astronomy. A leading theory suggests that dark matter particles are WIMPs, or Weakly Interacting Massive Particles. The existence of dark matter is known from its gravitational effects on visible matter, radiation, and the large-scale structure of the universe. A detector attached to the International Space Station has so far failed to find any dark matter either. Join a discussion with leading cosmologists to hear fresh perspectives on some of the deepest questions in modern science: What is the mysterious dark matter that fills intergalactic space? Superclusters are typically seen to be long and rather thin strands of many galaxy clusters, intracluster gases and as evolutionary cosmologists would assume, dark matter as well. Lately, however, some observations have begun to bear fruit. Macho or wimp The candidates for dark matter come in two basic sorts: largish chunks, or darting, sub-atomic particles in unimaginable abundance. They also confront theoretical cosmological predictions of hierarchical merging and galaxy formation in the scenario of the cold dark matter theory. Show More Sentences Microlensed double-image quasars have sent a consistent message that the baryonic dark matter consists of a dark population of free-roaming planet mass objects. A gluphilic scalar dark matter model has recently been proposed as an interesting vision for WIMP dark matter communicating dominantly with the Standard Model via gluons. While this hot gas can be seen, the actual dark matter it masks cannot. This hot gas, which is the heftiest component of the galaxy clusters aside from unseen dark matter, glows brightly in X-ray light detected by Chandra. They say that the dark matter has scattered due to the gravitational force and an interaction with the photons and neutrinos in the young universe. If particles of dark matter somehow could be detected, theoretical advances in physics and astronomy over the past several decades would gain evidentiary support. One intriguing possibility is that the X-rays are produced by the decay of sterile neutrinos, a type of particle that has been proposed as a candidate for dark matter. Our study focused on a specific type of cold dark matter called WIMPs, or weakly interacting massive particles, because they can account for some structure formation. Examples from Classical Literature In a dark matter like this, where we know so little, it behoves us to provide for every chance. In the meantime, I shall keep my eye on the district, and let no opportunity of throwing light upon this dark matter pass me. The dark matter may be lagging behind its host galaxy because another clump of dark matter slowed it down. Scientists have long suspected that invisible stuff called dark matter holds galaxies together as they whiz through space. By measuring cosmic rays, AMS is designed to help researchers understand the origin of the universe and search for evidence of dark matter, strange matter and antimatter. Find more words! 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