Solar System: Hunt for the Missing Planet
S02E06 - Airdate: 2015-07-24
Runtime: 43 min
The solar system and its planets seem like a familiar place. Yet scientists now think they've detected something huge lurking in the far reaches of the system we call home. Could it be that a missing, giant ninth planet orbits our sun in the dark reaches of space?
Episode details and rating from TVmaze.