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What is the evidence for dark matter and dark energy? 


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The evidence for dark matter and dark energy comes from various cosmological observations. Dark matter, which constitutes about 25% of the universe, is inferred from measuring the gravitational force it exerts on visible matter in galaxies and clusters, affecting their size, shape, rotation, and motion . On the other hand, dark energy, accounting for about 70% of the universe, is supported by observations of Type Ia supernovae, cosmic microwave background (CMB), galaxy surveys, Sunyaev-Zeldovich effect, and gravitational lensing by clusters . These observations have led to the development of the concordance ΛCDM model of cosmology . However, there are discrepancies in the values of certain parameters, such as H0 and σ8, between CMB and large-scale structures, which may require varying dark energy models to resolve . Further research is needed to establish the evidence for dark matter and dark energy more firmly .

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The paper provides evidence for an explicit interaction between dark matter and dark energy, but further study is needed to establish this statement firmly.
The evidence for dark energy is discussed in the paper, including observations from Type Ia supernovae, CMB, galaxy surveys, Sunyaev-Zeldovich effect, and lensing by clusters. However, the evidence for dark matter is not mentioned in the paper.
The evidence for dark energy is discussed in the paper, including observations from Type Ia supernovae, CMB, galaxy surveys, Sunyaev-Zeldovich effect, and lensing by clusters. However, the evidence for dark matter is not mentioned in the paper.
The evidence for dark matter is based on astronomical observations of distant objects, such as galaxies, which show changes in their size, shape, rotation, and movement due to the gravitational force exerted by dark matter. The paper does not mention dark energy.
Book ChapterDOI
28 Mar 2019
2 Citations
The evidence for dark matter and dark energy is outlined in the paper, but the specific details are not provided.

Related Questions

Dark matter and energy theories?5 answersDark matter and dark energy are two phenomena that have been the subject of extensive research and theoretical exploration. The existence of dark matter, which constitutes more than 80% of the matter in the universe, was first proposed by Oort in the 1930s. It is non-baryonic and does not interact with the electromagnetic field, making it invisible. Various theories have been put forth to explain the origin and behavior of dark matter, including the unified theory of electromagnetism and gravity. On the other hand, dark energy, which is responsible for the accelerated expansion of the universe, has been attributed to cosmological constant, vacuum energy, or quintessence. Additionally, new models of dark matter have been proposed, such as the concept of dark substance, which can explain the flat rotation curve of galaxies and the baryonic Tully-Fisher's law. These theories and models aim to provide a comprehensive understanding of the nature and properties of dark matter and dark energy.
What are the most interesting theories about dark matter and dark energy?5 answersThe most interesting theories about dark matter and dark energy include the following: 1) Dark matter is needed to prevent galaxies from flying apart, and dark energy has a strange 'antigravity' effect, pushing space and galaxies apart. 2) The presence of dark energy and dark matter can be explained by a new set of gravitational field equations based on the principles of general relativity and interaction dynamics. 3) Dark matter is non-baryonic and does not interact with the electromagnetic field, while dark energy is a force that repels gravity. 4) Various theoretical ideas have been proposed to explain the origin of dark energy, including modified matter models, modified gravity models, and inhomogeneous models. 5) Dark matter and dark energy make up about 95% of the content of the universe, with dark matter residing in non-luminous matter and dark energy pervading the whole universe as a zero point energy.
Https://typeset.io/search?q=What are the interesting theories about dark matter and dark energy?4 answersStep 1: Answer without citation Dark matter and dark energy are two mysterious substances that make up the majority of the universe's mass and energy. Theories about dark energy include the cosmological constant, modified matter models, modified gravity models, and the inhomogeneous model. These theories aim to explain the origin of dark energy and the current accelerated expansion of the universe. On the other hand, dark matter, which is non-baryonic, is needed to prevent galaxies from flying apart. Observational data and theoretical results have led to various interesting theories about dark matter and dark energy, shedding light on their roles in galaxy formation and the universe's expansion. Step 3: Answer with citation Dark matter and dark energy are two mysterious substances that make up the majority of the universe's mass and energy. Theories about dark energy include the cosmological constant, modified matter models, modified gravity models, and the inhomogeneous model. On the other hand, dark matter, which is non-baryonic, is needed to prevent galaxies from flying apart. Observational data and theoretical results have led to various interesting theories about dark matter and dark energy, shedding light on their roles in galaxy formation and the universe's expansion.
What are the interesting theoجنگ حماس و اسراییلries about dark matter and dark energy?5 answersDark matter and dark energy are two mysterious invisible substances that make up the majority of the matter in the universe. Dark matter is necessary to prevent galaxies from flying apart, while dark energy has an antigravity effect, pushing space and galaxies apart. One interesting theory suggests that the geometry of the universe depends very little on baryonic matter, and a variational principle involving only dark matter and dark energy can explain the observed values of the age of the universe and the parameter w, which is always negative and close to -1. Another theory proposes that dark matter and dark energy are physical attributes that indicate the existence of other parallel universes in a hidden Multiverse, where the laws of nature are identical but certain differences are possible. Additionally, a paper suggests that dark matter is hidden in the Time Quantum Worm Hole, and dark energy is the contribution of Planck black holes left behind by the early universe.
What is the relationship between dark energy and dark matter?5 answersDark energy and dark matter are two mysterious invisible substances that make up the majority of the matter in the universe. Dark matter, which constitutes about 25% of the universe, is needed to prevent galaxies from flying apart. On the other hand, dark energy, which makes up about 70% of the universe, has an antigravity effect that pushes space and galaxies apart. The existence of dark matter is supported by observations of the movement of stars in our galaxy. Dark energy, on the other hand, is a candidate for explaining several astrophysical observations not covered by the Standard Model of particle physics. The relationship between dark energy and dark matter is that they are both mysterious substances that make up the majority of the matter in the universe, with dark matter playing a role in holding galaxies together and dark energy pushing them apart.
Where have astronomers not found evidence for dark matter?4 answers

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