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Watch Cosmic Journeys

Cosmic Journeys

2009 - Present2 SeasonsReturning: Date TBA

Where to Watch Cosmic Journeys

22 Episodes

Where to stream every episode from all 2 seasons of Cosmic Journeys. Filter these episodes by what's available to watch free or on your streaming services using the tabs above.

Season 1

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Season 01, Episode 01 Is the Universe Infinite?

S01 E01

Jun 1, 2015
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Is the Universe Infinite? Jun 1, 2015 Explore the biggest question of all. How far do the stars stretch out into space? And what's beyond them? In modern times, we built giant telescopes that have allowed us to cast our gaze deep into the universe. Astronomers have been able to look back to near the time of its birth. They've reconstructed the course of cosmic history in astonishing detail.

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Season 01, Episode 02 Mars World that Never Was

S01 E02

Jun 1, 2015
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Mars World that Never Was Jun 1, 2015 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.

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Season 01, Episode 03 Saturn's Mysterious Moons

S01 E03

Aug 25, 2009
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Saturn's Mysterious Moons Aug 25, 2009 From the Cassini spacecraft comes one of the greatest photographic collections. Scientists are using it to uncover a trail of clues pointing to the energy sources and complex chemistry needed to spawn life.

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Season 01, Episode 04 Crashing Into The Moon

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Jun 1, 2015
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Crashing Into The Moon Jun 1, 2015 Over the next decade, the United States, Japan, India, China, Russia, and even private companies, are planning to send spacecraft to explore the moon. These missions are looking for resources that may one day allow humans to settle permanently in space.

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Season 01, Episode 05 The Search for Habitable Planets

S01 E05

Jun 1, 2015
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The Search for Habitable Planets Jun 1, 2015 The hunt for planets beyond our solar system has reached a fever pitch. With hundreds of planets revealed by ground telescopes, the Kepler space telescope has released a tsunami of data. They are shedding light on one of crucial questions of the age: what does it take for a planet to be habitable?

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Season 01, Episode 06 How Large Is The Universe?

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Jun 1, 2015
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How Large Is The Universe? Jun 1, 2015 The universe has long captivated us with its immense scales of distance and time. How far does it stretch? Where does it end, and what lies beyond its star fields and streams of galaxies extending as far as telescopes can see?

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Season 01, Episode 07 The Incredible Journey of Apollo 12

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Jun 1, 2015
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The Incredible Journey of Apollo 12 Jun 1, 2015 It's the ultimate buddy movie. Pete Conrad and Alan Bean were the second pair of Apollo astronauts to land on the moon. They combined precision with a sense of humor. But it was the rocks they picked up that would define the mission's legacy.

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Season 2

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Season 02, Episode 01 Supermassive Black Hole at the Center of the Galaxy

S02 E01

Jun 1, 2015
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Supermassive Black Hole at the Center of the Galaxy Jun 1, 2015 Feel the pull of the largest object in our galaxy, a supermassive black hole. Astronomers are discovering its properties by probing the stars and small black holes that are buzzing around it.

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Season 02, Episode 02 Birth of the Moon

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Jun 1, 2015
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Birth of the Moon Jun 1, 2015 Scientists have been reconstructing the history of the moon by scouring its surface, mapping its mountains and craters, and probing its interior. What are they learning about our own planet's beginnings?

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Season 02, Episode 03 The Largest Black Holes in the Universe

S02 E03

Jun 1, 2015
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The Largest Black Holes in the Universe Jun 1, 2015 Our Milky Way may harbor millions of black holes... the ultra dense remnants of dead stars. But now, in the universe far beyond our galaxy, there's evidence of something far more ominous. A breed of black holes that has reached incomprehensible size and destructive power. Just how large, and violent, and strange can they get?

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Season 02, Episode 04 The Search for Earth-Like Planets

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Jun 1, 2015
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The Search for Earth-Like Planets Jun 1, 2015 The latest from the planet-hunting frontier. Find out what we are learning about our place in the cosmos from the search for earth-like planets. This journey started tens of thousands of years ago, when humans began to fan out across the planet, following unknown pathways, crossing unmeasured distances. We traced coastlines, and sailed uncertain seas.

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Season 02, Episode 05 Venus: Death of a Planet

S02 E05

Jun 1, 2015
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Venus: Death of a Planet Jun 1, 2015 Why did Earth thrive and our sister planet, Venus, died? From the fires of a sun's birth... twin planets emerged. Then their paths diverged. Nature draped one world in the greens and blues of life. While enveloping the other in acid clouds... high heat... and volcanic flows. Why did Venus take such a disastrous turn?

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Season 02, Episode 06 When Will Time End?

S02 E06

Jun 1, 2015
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When Will Time End? Jun 1, 2015 The answer to this question may depend on whether Stephen Hawking was right in his theory that describes how black holes shed mass and eventually decay. Time is flying by on this busy, crowded planet as life changes and evolves from second to second. At the same time, the arc of the human lifespan is getting longer: 67 years is the global average, up from just 20 years in the Stone Age.

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Season 02, Episode 07 Birth of a Black Hole

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Jun 1, 2015
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Birth of a Black Hole Jun 1, 2015 It was one of the greatest mysteries in modern science: a series of brief but extremely bright flashes of ultra-high energy light coming from somewhere out in space. These gamma ray bursts were first spotted by spy satellites in the 1960s. It took three decades and a revolution in high-energy astronomy for scientists to figure out what they were.

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