Cosmic structure refers to the large-scale organization and distribution of matter in the universe, including galaxies, clusters of galaxies, and superclusters. This research area focuses on understanding the formation and evolution of these structures, as well as their interactions with dark matter and dark energy. Scientists study cosmic structure through observations of the cosmic microwave background, galaxy surveys, and simulations of the universe's evolution. By studying cosmic structure, researchers aim to better understand the fundamental properties of the universe and the processes that have shaped its current structure.