6 Seasons
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   8

Did Aliens Nuke Mars?