S6 E4
5/2/19
Pluto's Evil Twin
After NASA's New Horizons spacecraft flies by Pluto, it encounters a strange alien world that shuts down the probe's computers, and experts investigate if this mysterious object is an alien spacecraft hiding at the edge of our solar system.
Seasons
Episode
1
Saturn's Moon Monsters
Episode
2
Aliens vs. Stalin at Area 51
Episode
3
The Black Hole Next Door
Episode
4
Pluto's Evil Twin
Episode
5
Aliens in the Amazon
Episode
6
Secrets of the Alien Signals
Episode
7
Planet of the Metal Aliens
Episode
8