Disputes and fierce competition between eminent scientific figures is discussed, and developments in optical telescopes, radio telescopes, X-ray telescopes and a variety of satellite instruments which help us to learn more about the universe are followed.
The work, knowledge and, in some cases, falibility, of historical figures is investigated, along with Edwin Hubble's work on nebula and expansion, Einstein's theory of relativity, the extensive theories on supermassive black holes conducted throughout the 20th and 21st centuries, the production of radio energy by some galaxies, haloes, dark matter, and the perplexing possibilities of infinity.