Space and time are measures of very different things. We live in a world with three spatial dimensions; you can point your fingers in three mutually perpendicular directions, but not four. Time, our sense of the continuous transition from past through now to future seems to be something completely different from space. Yet Einstein created an enormously successful theory, Relativity, in which space and time are mixed together in a unity called spacetime. This course explores some of the nooks and crannies of spacetime. Time permitting, the course also addresses curved spacetime (whatever that is) and Black Holes. Meets the Critical Perspectives: Scientific Investigation of the Natural World requirement. (Summer only 2020-21).