Cosmic Journeys

S1 E342009

Day of the Asteroid

Episode Synopsis

Asteroids racing through the solar system have smashed into Earth before. What are the chances we'll get hit again? Armed with new defensive technologies, scientists are getting ready for the day, a decade, century from now: the Day of the Asteroid.

Next Episodes

All Seasons

Birth of the Moon

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Attack of the Sun

Episode 2

Cosmic Journeys

Day of the Asteroid

Episode Synopsis

Next Episodes

Birth of the Moon

Attack of the Sun

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Saturn's Mysterious Moons

The Largest Black Holes in the Universe

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When Will Time End

The Incredible Journey of Apollo 12

Supermassive Black Hole in the Milky Way Galaxy

Mars: Earth That Never Was

The Search for Earth-like Planets

Voyage to Pandora: First Interstellar Space Flight

Venus: Death of a Planet

Cosmic Energy: Cold Sparks to Black Holes

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Alien Planets & Eyeball Earths: The Search for Habitable Planets

The Riddle of AntiMatter

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The Most Powerful Objects in the Universe

Birth of a Black Hole

Plasma Rockets & Solar Storms

Voyager: Journey to the Stars

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Reinventing Space Flight

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The Age of Hubble

Glimpsing the Solar System's Birth

Hubble: Universe in Motion

SuperTornado: Anatomy of a MegaDisaster

Day of the Asteroid

Black Holes and the High Energy Universe

The Improbable Rise of Planet Earth

Star Crash: The Explosion that Transformed Astronomy

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