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Cosmic Journeys
Season 1 · Episode 10
Mars: Earth That Never Was
0.024mDecember 21, 2009
Did Mars long ago develop far enough for life to arise? If so, does anything still live somewhere underground? The search for answers has revealed the forces that long ago doomed the Red Planet.
Episodes
- Episode 1Birth of the Moon
- Episode 2Attack of the Sun
- Episode 3Super Hurricanes
- Episode 4Saturn's Mysterious Moons
- Episode 5The Largest Black Holes in the Universe
- Episode 6How Large Is the Universe?
- Episode 7When Will Time End
- Episode 8The Incredible Journey of Apollo 12
- Episode 9Supermassive Black Hole in the Milky Way Galaxy
- Episode 10Mars: Earth That Never Was
- Episode 11The Search for Earth-like Planets
- Episode 12Voyage to Pandora: First Interstellar Space Flight
- Episode 13Venus: Death of a Planet
- Episode 14Cosmic Energy: Cold Sparks to Black Holes
- Episode 15Is the Universe Infinite?
- Episode 16Alien Planets & Eyeball Earths: The Search for Habitable Planets
- Episode 17The Riddle of AntiMatter
- Episode 18Mysteries of a Dark Universe
- Episode 19Crashing Into the Moon
- Episode 20The Most Powerful Objects in the Universe
- Episode 21Birth of a Black Hole
- Episode 22Plasma Rockets & Solar Storms
- Episode 23Voyager: Journey to the Stars
- Episode 24Earth in 1000 Years
- Episode 25Reinventing Space Flight
- Episode 26Supervolcanoes
- Episode 27Fate of Antarctica
- Episode 28Life: Destiny or Chance?
- Episode 29Interstellar Flight
- Episode 30The Age of Hubble
- Episode 31Glimpsing the Solar System's Birth
- Episode 32Hubble: Universe in Motion
- Episode 33SuperTornado: Anatomy of a MegaDisaster
- Episode 34Day of the Asteroid
- Episode 35Black Holes and the High Energy Universe
- Episode 36The Improbable Rise of Planet Earth
- Episode 37Star Crash: The Explosion that Transformed Astronomy