Crush

Gravity is at once familiar and mysterious. It’s the reason for the numbers on your bathroom scale, the intricate dance of the stars and planets, and the evolution and eventual fate of the universe. In Crush, James Riordon takes listeners on a tour of gravity from its vanishing insignificance on the microscopic scale to its crushing extreme inside black holes.

From the moment we lift our heads as infants until the moment we lie down and ultimately surrender to its pull at the end of our lives, we labor under the burden of gravity. It has guided the shape and structure of our bodies over eons of evolution and sculpted the Earth as it cooled from a blob of molten rock. As Riordon explains, the stars couldn’t shine without gravity holding them together. Even the atoms that make up you and everything around you were forged in stellar furnaces that gravity built. It took Einstein to realize that gravity is not, in fact, a force at all, but instead the curvature of space and time.