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 What Would We Do If Aliens Just Showed Up Tomorrow? Why We Have Pain and How We Kill It This Cup Is Unspillable – What Magic Is This? How Fast Does A Thought Travel? Why Are The Planets In The Order They’re In? Which Animals are Beating Humans at Reproduction?