4 - 1Pluto's Stranger Things Aug. 30, 2016
4 - 2Rise of the Planet Killer Sep. 06, 2016
4 - 3A President's Close Encounter Sep. 13, 2016
4 - 4The Earth Next Door Sep. 20, 2016
4 - 5Curse of the Full Moon Sep. 27, 2016
4 - 6Did Earth Have Two Moons? Oct. 04, 2016