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Astrophysicist and science visionary Janna Levin discusses all things cosmology: black holes, gravitational waves, the James Webb Space Telescope discoveries, early galaxies, and more.

Janna J. Levin is a theoretical cosmologist and a professor of physics and astronomy at Barnard College. She researches black holes, the cosmology of extra dimensions, and gravitational waves in the shape of spacetime. In addition she is the director of sciences at Pioneer Works. Her books include Black Hole Survival Guide, Black Hole Blues and Other Songs from Outer Space, and How the Universe Got Its Spots.