How the Universe Works - Season 5 (2016) (season)
USA,
2016, 43 min
Cast:
Mike Rowe (narrator), Michelle Thaller, Phil Plait, Lawrence M. Krauss, Kevin Walsh, Dan DurdaPlots(1)
Scientists have discovered a mysterious ninth planet on the very edge of our solar system. Ten times the size of Earth, this strange world could have moons with extraterrestrial life. (iTunes)
Gallery (2)
Photo © Discovery Channel
![How the Universe Works - The Mystery of Planet 9 - Photos](http://image.pmgstatic.com/cache/resized/w663/files/images/film/photos/163/142/163142927_3e21eb.jpg)