Cosmos Episode 4: A Sky Full of Ghosts
In “A Sky Full of Ghosts,” Neil deGrasse Tyson sets off on the Ship of the Imagination to explore how light, time and gravity alter our perception of the universe. Travel back in time to 1809, when astronomer William Herschel (guest voice Stewart) observes how light plays tricks with time and gravity. Later, Tyson embarks on an exhilarating journey to the event horizon of a black hole.
Comments are closed.