Forum discussion tagged with space-time.
  1. M

    The absurdity of space-time curvature and geodesics

    Einstein's theory of gravity is based on the notion that space-time can be curved (by mass and energy) and uses geodesics to describe its curvature. So what is a geodesic ? A geodesic is the shortest line between two points on a spherical or curved surface (Oxford def.). But space has no...