‘PBS Space Time’ Explores Whether a Circle Can Be a Straight Line

PBS Space Time host Gabe Perez-Giz explores whether a circle can be a straight line. The answer is rather complicated, and is the first part of Perez-Giz’s three-part explanation of general relativity.

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”.