What Is Gravity?

S1 E2: Brian takes a fresh look at the concept of gravity, revealing it to be far more than just the force that makes things fall to the ground. Recent scientific breakthroughs are challenging physicists' ideas of the very nature of reality. He recalls some of his most iconic TV moments: being first on the scene to meet a space capsule returning three astronauts from the International Space Station, and demonstrating how a bowling ball and feather fall at the same speed.