Relativity Lite is designed for the General Astronomy sequence (PH 361-2U, SCI 315-6U) whose primary book glosses over Special Relativity and General Relativity while trying to explain the Cosmology that is based on those subjects. Relativity Lite translates the mathematical equations conventional relativity texts rely upon into pictures that are readily understood and contain within them the mathematical essentials. This book provides the comprehensive coverage needed to understand, in sufficient depth, these three linked areas of our reality. Readers seeking this knowledge on their own, and those in other courses for nonscientists, may also find it helpful. Adopt/AdaptIf you are an instructor adopting or adapting this open educational resource, please help us understand your use by filling out this form Print-on-DemandStandard print copy (paperback) Premium print copy (hardcover)