Astronaut Mike Massimino explores Mars's greatest mysteries.
NASA's Cassini spacecraft concludes its 20-year mission to explore Saturn and its moons; astronaut Mike Massimino unveils what happened during Cassini's thrilling final moments, and how its incredible discoveries revealed Saturn's deepest secrets.
Astronaut Mike Massimino explores the strange secrets of Planet 9, a mysterious world at the edge of the solar system.
Astronaut Mike Massimino explores Pluto's greatest mysteries.
Astronaut Mike Massimino explores the secrets of some of the strangest planets in our universe.
This episode is a mashup of S02E01, "Earth: The Secret History", and S01E08, "The Moon: Earth's Guardian Angel".
This episode is a mashup of S02E05, "Ice Giants: The Frozen Aliens", and S01E04, "Saturn: Mysteries Among the Rings".
This episode is a mashup of S02E04, "Ends of the Solar System: Strange Frontiers" and S01E05, "Planet 9: The Lost World".
This episode is a mashup of episodes from two other series: "Strip the Cosmos", S01E06, "Hunting a Comet" and "How The Universe Works", S02E06, "Comets - Frozen Wanderers".
This episode is a mashup of "The Planets (2017)", S02E07, "Mercury: The Cursed Planet" and "Space's Deepest Secrets", S03E07, "Expedition Extraterrestrial".
This episode is a mashup of S02E06, "Alien Galaxies: The Strange Secrets" and S02E03, "Milky Way: The Monster Inside".
This episode is a mashup of S02E10, "The Solar System: Alien Origins" and S02E04, "Ends of the Solar System: Strange Frontiers".
This episode is a mashup of S02E11, "Dwarf Planets: Aliens Among Us" and S01E07, "Alien Worlds: Stranger Than Fiction".
This episode is a mashup of S02E12, "Alien Stars: Mystery of the Monsters" and "Space's Deepest Secrets", S02E08, "Rise of the Monster Stars".
This episode is a mashup of S02E13, "Alien Volcanoes: Life in Hell" and "Space's Deepest Secrets", S02E05, "Mysteries of Alien Volcanoes".
This episode is a mashup of S02E14, "Alien Moons; The Next Earth" and S01E01, "Jupiter: King of the Planets".
This episode is a mashup of S02E15, "Alien Oceans: Search for Life" and "How the Universe Works", S04E07, "The First Oceans".
The Planets tells the story of the discovery and exploration of the planets, and reveals the deepest secrets of our neighbors in space.