Watch The Planets season 2 episode 2016 tv series online free
Release: Oct 01, 2018
Astronaut Mike Massimino explores the oceans of our solar system and the alien origins of Earth's own seas. This episode is a mashup of "The Planets", S02E15, "Alien Oceans: Search for Life" and "How the Universe Works", S04E07, "The First Oceans".