6 Seasons
S4 E1

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.


Episode   1

Saturn's Moon Monsters

Episode   6

Secrets of the Alien Signals

Episode   7

Planet of the Metal Aliens

Episode   8

Did Aliens Nuke Mars?