The Big Bang
Lecture no. 32 from the course: The Joy of Science
Taught by Professor Robert M. Hazen | 31 min | Categories: The Great Courses Plus Online Science Course
The Big Bang theory proposes that the universe came into existence at one moment in time and has expanded rapidly. The Big Bang was not an explosion but an expansion—of space itself, with all its matter and energy. What observations support this theory? What surprising conclusions do astronomers draw from galactic red shifts?