66 · Astrophysicist · Eclipse, Black Hole, and Einstein's Gravity

Dr Aaron Zimmerman is professor of physics at the University of Texas at Austin, researcher at the LIGO gravitational wave detector, and our speaker from episode 8. He speaks here about how an expedition was undertaken during the eclipse of 1919, to show evidence for Einstein’s theory of gravity. He then talks about the phenomenon of gravitational lensing, and the black hole at the center of our galaxy.