1:00pm

Fri May 6, 2011
NPR Story

Proof That Einstein Got It Right

Einstein's general theory of relativity predicts that massive, spinning objects like Earth should warp space and time around them, as well as drag space and time along as they rotate--as a dipper twirling in a honeypot would spin honey. Francis Everitt talks about how NASA's Gravity Probe-B experiment has just confirmed both predictions.