The term "Cosmos" refers to the universe as an orderly and harmonious system. It encompasses all matter, energy, planets, stars, galaxies, and the vast empty spaces between them. The study of the cosmos is a key focus of astronomy, which seeks to understand the origins, evolution, and structure of the universe. In addition to its scientific meaning, "Cosmos" is also the title of a popular television series created by Carl Sagan in 1980, later revived by Neil deGrasse Tyson in 2014. The series explores various aspects of the universe, including the laws of nature, the history of life on Earth, and humanity's place in the cosmos.