Where to Watch Cosmic Journeys
Below you'll find every episode from all 2 season of Cosmic Journeys.
To see what is available free to watch, click the 'Episodes on Sources' tab above.
S01 E01Jun 1, 2015
Is the Universe Infinite? 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.
S01 E02Jun 1, 2015
Mars World that Never Was 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.
S01 E03Aug 25, 2009
Saturn's Mysterious Moons 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.
S01 E04Jun 1, 2015
Crashing Into The Moon 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.
S01 E05Jun 1, 2015
The Search for Habitable Planets 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?
S01 E06Jun 1, 2015
How Large Is The Universe? 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?
Season 2Amazon Prime | Rent or Buy
S02 E03Jun 1, 2015
The Largest Black Holes in the Universe 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?
S02 E05Jun 1, 2015
Venus: Death of a Planet 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?
S02 E06Jun 1, 2015
When Will Time End? 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.
S02 E07Jun 1, 2015
Birth of a Black Hole 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.
S02 E09May 15, 2016
Black Holes and the High-Energy Universe Astronomers are probing the high-energy cosmic frontier with a series of key missions: Fermi, Swift, Chandra, NuSTAR, and Hubble. Their goal: to find out how the universe works on a fundamental level. This video was inspired by a NASA event at the Smithsonian National Air and Space Museum, where leading scientists delivered the latest news about black holes, supernovae, and gamma ray bursts.