Inflation! The First Fraction of a Second

S1, E6: Dig into the bizarre theory of inflation developed by physicist Alan Guth, which holds that for a fraction of a second just after the Big Bang the universe expanded at a mind-boggling rate, making the cosmos effectively infinite. Analyze how this idea solves the three puzzles introduced earlier. Learn about associated concepts, such as the scalar field and its decay, known as “reheating.”