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 Could Black Holes Made Of Light Power Our Spaceships? What $315 Billion Worth of Gold Looks Like Xenotransplantation: When People Get Animal Parts Why China’s One-Child Policy Failed Why is Your Bottom in the Middle? The Strange Blue Glow That Saved Lives