Cosmic matter refers to the various forms of matter that exist in the universe, including stars, planets, and galaxies. It encompasses both visible matter, like stars and planets, and invisible matter, such as dark matter and dark energy, which make up a significant portion of the universe's total mass. Understanding cosmic matter is crucial for comprehending the universe's structure and evolution. Scientists study cosmic matter to learn about the formation of galaxies and the behavior of black holes. This knowledge helps us grasp the fundamental forces that shape our cosmos and the potential for life beyond Earth.