Dark matter outweighs visible matter in the universe from "summary" of The Fabric of the Cosmos by Brian Greene
In the grand cosmic scheme, the balance between visible matter - the stuff we can see and touch - and dark matter - the enigmatic substance that eludes direct detection - is a crucial factor. While stars, planets, and galaxies make up the visible matter that we interact with on a daily basis, dark matter remains hidden, exerting its gravitational influence on the structures we observe in the cosmos. Despite its elusive nature, dark matter reveals its presence through the gravitational pull it exerts on visible matter. The motions of galaxies within clusters, the rotation curves of galaxies, and the bending of light by massive objects all point to the existence of dark matter. In fact, the gravitational effects of dark matter far outweigh those of visible matter, shaping the large-scale structure of the universe we inhabit. The dominance of dark matter in the cosmic ledger poses a fundamental challenge to our understanding of the cosmos. While visible matter forms the building blocks of stars, planets, and all the familiar objects in our universe, dark matter holds the reins on the cosmic stage, dictating the dance of galaxies and the distribution of matter on the largest scales. To unravel the mysteries of dark matter and its role in the cosmic drama, scientists employ a variety of observational and theoretical tools. From the detection of dark matter particles in underground laboratories to the simulation of cosmic evolution in supercomputers, researchers strive to shed light on the shadowy substance that governs the fate of the universe. As we peer into the depths of space and time, the realization that dark matter outweighs visible matter in the universe underscores the profound mysteries that continue to captivate our imaginations. While we may never directly observe dark matter, its presence serves as a silent reminder of the vast unknowns that lie beyond the reach of our senses. In the intricate tapestry of the cosmos, dark matter weaves a thread of mystery that challenges our understanding of the universe we call home.
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