Can a Circle Be a Straight Line?

Want to ask some sort of crazy question about Space?: Tweet at us! @pbsspacetime Email us! pbsspacetime [at] gmail [dot] com Comment on Reddit: Help translate our videos! Let us know what topics you want to learn more about: General Relativity! Spacetime! And... Curved Lines? On this week's episode of Spacetime, Gabe talks about what it actually means for a line to be straight so we can better understand what we mean by the idea of "curved Spacetime". This is Part One of our series on General relativity, so be sure to check it out! Links to Annotated Previous PBS Space Time Episodes: "Is Gravity an Illusion?" "Are Space and Time an Illusion?" Extra Credit: Visualizing parallel transport and geodesics on a sphere: More mathematical PDF about parallel transport and curvature: ----------------------------------------­­­­­­­­­­­­­­­--------------------------­-­-­-­-­- Comments: Jordan Filipovski MaybeFactor scharfy ourpensareourlips JakeFace0 QuannanHade Ali Muzaffar Marko Nara Indigo Jose Catlett Music: u dont know im fadin Secret Society - Logical Disorder ( Movement 3 - Janne Hanhisuanto ( Philly D Jr - Patternbased ( Earth Breath - Human Terminal ( Deep Blue - Janne Hanhisuanto ( Saw Slicing - Patternbased ( Heisse Luft - Thompson and Kuhl ( miracle - slow ( Tropico de Tauro - Sr. Aye New SpaceTime episodes every Wednesday! Hosted by Gabe Perez-Giz Made by Kornhaber Brown (www.kornhaberbrown.com)