Astrophysicist Explains Gravity in 5 Levels of Difficulty | WIRED

Astrophysicist Janna Levin, PhD, is asked to explain the concept of gravity to 5 different people; a child, a teen, a college student, a grad student, and an expert. Levin is the Claire Tow Professor of Physics & Astronomy at Barnard College of Columbia University and author of “Black Hole Blues and Other Songs from Outer Space.“ She is also the Chair and Director of Sciences at Pioneer Works, where this video was filmed. To learn more, visit Still haven’t subscribed to WIRED on YouTube? ►► Listen to the Get WIRED podcast ►► Get more incredible stories on science and tech with our daily newsletter: Also, check out the free WIRED channel on Roku, Apple TV, Amazon Fire TV, and Android TV. Here you can find your favorite WIRED shows and new episodes of our latest hit series Tradecraft. ABOUT WIRED WIRED i