Why do differentmass objects fall at the same rate? Neil deGrasse Tyson and Chuck Nice explain the acceleration of gravity, Galileo’s experiment, and Einstein’s Equivalence principle.

Why was Aristotle so wrong about gravity? We break down Galileo’s hammer and feather experiment on The Leaning Tower of Pisa and The Moon. Learn about what Einstein thought of this phenomenon as he came up with the Equivalence principle and how gravity bends light.

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Science meets pop culture on StarTalk! Astrophysicist & Hayden Planetarium director Neil deGrasse Tyson, his comic cohosts, guest celebrities & scientists discuss astronomy, physics, and everything else about life in the universe. Keep Looking Up!

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00:00 Why Do Objects Fall At the Same Rate?
1:00 Galileo’s Experiment
2:18 Apollo 15 Hammer & Feather Experiment
3:20 The Classic Onion & Ball Experiment
5:24 The Equivalence Principal
8:05 Gravity Bending Light