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What is the evidence for the existence of dark matter in the universe?
The evidence for the existence of dark matter in the universe includes the extra mass of Galactic clusters discovered by Fritz Zwicky, and the spinning galaxies which rotate at the same speed as discovered by Vera Rubin.
What evidence is there of the existence of dark matter?
The gravitational effects. For example, gravitational lensing; also, galaxies spin way too fast for the amount of known matter.
Why do astronomers theorize that most of the matter in galaxies and clusters of galaxies is dark matter?
most of the mass in a cluster of galaxies is invisible, which provides astronomers with the strongest evidence that the universe contains a great amount of DARK MATTER
Why do astronomers theorize that most of matter in galaxies and clusters of galaxies is dark matter?
most of the mass in a cluster of galaxies is invisible, which provides astronomers with the strongest evidence that the universe contains a great amount of DARK MATTER
Do black holes interact with dark matter?
Important as dark matter is thought to be in the cosmos, direct evidence of its existence and a concrete understanding of its nature have remained elusive. Dark matter is expected to be very pervasive in the cosmos, and pretty much associated with normal matter. The prevailing hypothesis is that dark matter presence is accumulated consistent mass density; i.e. the more mass density, the greater the accumulation of dark matter. Note: Dark matter is hypothesized to play a central role in state-of-the-art modeling of structure formation and galaxy evolution. All these lines of evidence suggest that galaxies, clusters of galaxies, and the universe as a whole contain far more non-baryonic dark matter than normal baryonic matter.
Unexpected orbital velocities of stars around the centers of galaxies led astronomers to predict the existence of dark?
These helped predict the existence of dark matter. Dark matter in astronomy is used appear as the result of mass, where no actual mass can be seen.
When was dark matter therolized?
Dark matter was first theorized in the early 1930s, primarily by Swiss astronomer Fritz Zwicky. He observed the Coma Cluster of galaxies and noticed that the visible matter could not account for the gravitational effects observed, leading him to propose the existence of unseen matter that he termed "dunkle Materie," or dark matter. This concept gained further support in the following decades as more evidence accumulated from various astronomical observations.
What connection is there between the rotation of galaxy clusters and dark matter?
The rotation of galaxy clusters is influenced by the presence of dark matter, which does not emit light but exerts gravitational forces. Observations show that galaxies within clusters rotate at speeds that exceed what would be expected based solely on the visible matter. This discrepancy indicates that a significant amount of unseen mass, attributed to dark matter, is present, providing the necessary gravitational pull to keep galaxies bound within the cluster and maintain their high rotational velocities. Thus, the behavior of galaxy clusters serves as critical evidence for the existence of dark matter in the universe.
Does dark matter affect the brightness of galaxies?
By definiton, "dark" matter neither emits or absorbs light. Thus, it does not effect the brightness of galaxies.
What might likely be affected by the existence of and ldquodark matter and?
The existence of dark matter can impact the gravitational forces within galaxies and the overall structure of the universe. It plays a crucial role in the distribution of matter and the formation of large-scale structures in the cosmos. Additionally, understanding dark matter is essential for refining our understanding of fundamental physics and the composition of the universe.
Does dark matter relate to a supernova?
Probably not. Dark matter is not believed to concentrate well in or around masses the size of stars. But it does concentrate well around galaxies and clusters of galaxies. Most of the mass of a galaxy like ours is believed to be in a sphere of dark matter in the galaxy's spherical halo.
Why can't the dark matter in galaxies be made of neutrinos?
Dark matter in galaxies cannot be made of neutrinos because neutrinos are too light and move too quickly to account for the gravitational effects observed in galaxies. Neutrinos also interact weakly with other particles, making them unlikely candidates for the majority of dark matter in the universe.
