'Cosmos: A Spacetime Odyssey' Fox TV Schedule, Episode 4 Live Stream: Watch Online 'A Sky Full of Ghosts' (Video)
The fourth episode of Cosmos: A Spacetime Odyssey, hosted by Neil deGrasse Tyson, will air on Sunday March 30 at 9 p.m. EST on FOX and Monday March 31 on National Geographic at 10 p.m. EST.