A brief history of time was a famous popular science novel written by the British physicist Stephen Hawking. It used physics theories such as relativity, quantum mechanics, and cosmos as the main topics to describe the basic concepts and explanations of time, space, matter, and energy. A brief history of time mainly talked about the nature of time, the speed of time, time travel, black holes, gravitational waves, and other topics. Through vivid storylines and specific physics experiments, the book presented the concept and theory of a brief history of time to the readers and explained their significance and role in practical applications. A brief history of time was an enlightening and popular science book for readers interested in physics and science.