Dark matter's mysterious influence from "summary" of A Breif History of Time and the Universe in a Nutshell by Stephen Hawking
Dark matter's mysterious influence is one of the most intriguing aspects of modern astrophysics. Scientists have long been puzzled by the fact that the visible matter in the universe cannot account for the gravitational forces that hold galaxies together. The existence of dark matter was first proposed in the 1930s by astronomer Fritz Zwicky, who noticed that the velocities of galaxies in clusters were much higher than expected based on the amount of visible matter present.
Since then, numerous observations have confirmed the presence of dark matter in the universe. One of the most compelling lines of evidence comes from the study of the cosmic microwave background radiation, which shows small fluctuations that are consistent with the presence of dark matter. Additionally, the rotation curves of galaxies and the gravitational lensing of light from distant objects also point to the existence of dark matter.
Despite its pervasive influence on the universe, dark matter remains elusive and difficult to detect. It does not emit, absorb, or reflect light, making it invisible to telescopes. Scientists have been searchin...
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