|Episode Online Video|
S05, E04 (First Aired:
The first close-up images of Pluto reveal unimaginable secrets; scientists investigate if Pluto is home to a warm ocean of liquid water beneath its surface and whether this underground ocean could harbor life.
S05, E03 (First Aired:
The evolution of life on Mars before a series of cataclysmic events transformed the planet from a watery world to a hostile one; scientists believe life will find a way to continue despite the setbacks.
S04, E01 (First Aired:
The history of the Universe lies beneath the hood of your car; The iron in your chassis, the gold in your stereo and the copper in your electronics all owe their existence to violent cosmic events that took place billions of years ago.
S04, E03 (First Aired:
A look inside the supermassive black hole in the center of the Milky Way to discover terrifying secrets about parallel universes, wormholes, and space-time.
S05, E01 (First Aired:
Scientists have discovered a mysterious ninth planet ten times the size of Earth on the very edge of the solar system; this strange world could have moons with extraterrestrial life.
S04, E07 (First Aired:
For years, scientists suspected that the oceans came from molecules delivered to Earth from distant stars by asteroids, but a new discovery suggests that their true origins may be more exotic.
S05, E02 (First Aired:
Recent evidence could explain how supermassive black holes grow so big; neither dark matter nor cannibalism can fully explain these beasts, but the latest science may finally provide an answer.
S04, E06 (First Aired:
The incredible secrets of the moon are revealed; the moon might be responsible for life on Earth.
S05, E07 (First Aired:
Dark matter is the biggest mystery of the cosmos; scientists know that it has been vital to our universe since its birth, and new discoveries reveal that it could create black holes, cause mass extinctions, and might even shape life on Earth itself.
S01, E04 (First Aired:
The story of how stars were made by the universe and how stars went on to engineer everything else in that universe.
S02, E03 (First Aired:
Discovering an extraordinary zoo of planetary nightmares outside our own planet.
S05, E05 (First Aired:
Exploring the real-life Death Stars in the cosmos that could snuff out Earth without much effort; the science of the destructive power behind six of the deadliest stars; vampire stars; supernovas; rogue stars.
S05, E06 (First Aired:
The universe is a dangerous place; exploring the deadliest spots in the cosmos; between earth and the edge of the universe, there are a million ways to die; a crash test dummy is on a mission.
No Episode Title
Exploring the inner workings of outer space.