Explore the cutting edge of human achievement. Journey to the deepest reaches of space. Dive into the mysterious physics of quantum realms. Fly with astronauts into hostile extraterrestrial realms.

Cosmic Frontiers

Astronomers explore the fundamental workings of the universe and its energies through programs including Fermi, Swift, Chandra, NuSTAR and Hubble.

Cosmic Journeys

Black Holes and the High-Energy Universe

Scientists develop new defensive technology to prepare Earth for a close encounter with a destructive asteroid.

Day of the Asteroid

Exploring Venus' history and how it diverged from Earth in its formative years to become a hot, acidic, lifeless world.

Venus: Death of a Planet

Among the millions black holes in the Milky Way Galaxy are massive black holes with the greatest potential for destruction.

The Largest Black Holes in the Universe

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Exploring the various aspects of the cosmos.

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Scientists win the Nobel Prize in Physics for discovering that the universe is infinitely expanding in all directions, changing the field of cosmology.

S1 E18 | Mysteries of a Dark Universe