What Did Einstein Mean By ‘Curved’ Spacetime? We asked two physicists to walk us through one of the basic principles in Einstein’s general theory of relativity. Facebook Prev Article Next Article Discover Checkout these cool gadgets... Related Posts Why Is Only Half of My Nose Working? How Does a Gas Pump Know When to Stop Pumping? The Leap Second Explained Bill Nye’s Answer on Why We Haven’t Heard of Aliens How your muscular system works What Is in a Meteor Crater?