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Collisions between celestial bodies are examined.
Season 1, Episode 6
April 5, 2011
The creation of the moon; collisions on Jupiter; how rocks from Mars appeared on Earth.
Season 1, Episode 5
March 29, 2011
Examining meteor strikes on Earth and what scientists are doing to prepare for a potentially devastating meteor strike.
Season 1, Episode 1
January 28, 2009
Threats to Earth posed by meteors and asteroids are examined in the opener of the documentary series.
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