Season 4
Episodes
1 Pluto's Stranger Things Aug 30, 2016 
2 Rise of the Planet Killer Sep 6, 2016 
3 A President's Close Encounter Sep 13, 2016 
4 The Earth Next Door Sep 20, 2016 
5 Curse of the Full Moon Sep 27, 2016 
6 Did Earth Have Two Moons? Oct 4, 2016 
7 Mystery of the Invisible Planet Oct 11, 2016 
8 Mars's Deepest Secret Oct 18, 2016