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The Planets (2017): 2x8
Comets: Mysteries from the Deep
Astronaut Mike Massimino reveals the alien secrets of comets, strange visitors from deep space that might be responsible for life on Earth.
2 - 1Earth: The Secret History Mar. 20, 2018
2 - 2Alien Planets: Cosmic Nightmares Mar. 27, 2018
2 - 3Milky Way: The Monster Inside Apr. 03, 2018
2 - 4Ends of the Solar System: Strange Frontiers Apr. 10, 2018
2 - 5Ice Giants: The Frozen Aliens Apr. 17, 2018
2 - 6Alien Galaxies: The Strange Secrets Jul. 24, 2018
2 - 7Mercury: The Cursed Planet Jul. 31, 2018
2 - 8Comets: Mysteries from the Deep Aug. 07, 2018
2 - 9The Sun: Secrets of Our Star Aug. 14, 2018
2 - 10The Solar System: Alien Origins Aug. 21, 2018
2 - 11Dwarf Planets: Aliens Among Us Aug. 28, 2018
2 - 12Alien Stars: Mystery of the Monsters Sep. 04, 2018
2 - 13Alien Volcanoes: Life in Hell Sep. 11, 2018
2 - 14Alien Moons: The Next Earth Sep. 18, 2018
2 - 15Alien Oceans: Search for Life Sep. 25, 2018