Cosmology may be a relatively new science, but it asks some of the most ancient questions: is the universe infinite? How long has it been around? Will it ever end? ‘A brief history’ charts the historical development of cosmology as a subject of study and explains how some of the key ideas evolved. What do the various creation myths believe about the origins of the universe? What did the Greeks think and how did views change during the Renaissance? The modern era of scientific cosmology began with Einstein's general theory of relativity, published in 1915, which allowed for a consistent mathematical explanation for the Universe.