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 The Secret Invention That Changed World War 2 Understanding the Most Extreme Numbers in the Universe The Most Astounding Fact (Neil DeGrasse Tyson) Fusion Energy Explained – Future or Failure Big Plane vs Little Plane (The Economics of Long-Haul Flights) Why Do Our Hair And Eye Color Change?