3 - 1Hunt for the Hidden Cosmos Aug. 22, 2017
3 - 2When Meteors Attack Aug. 29, 2017
3 - 3Inside the New Space Race Sep. 05, 2017
3 - 4Search for Alien Earths Sep. 12, 2017
3 - 5Cassini's Grand Finale Sep. 19, 2017
3 - 6The Sun's Greatest Mysteries Sep. 26, 2017
3 - 7Expedition Extraterrestrial Oct. 03, 2017
3 - 8When Black Holes Collide Oct. 10, 2017