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 This Device Can Turn Your Finger into a Phone How Long Is One Second, Really? The Strange St Pauli Elbtunnel What if NASA had the US Military’s Budget? Teenager wins $400,000 for video explaining Relativity Why can’t we see evidence of alien life?