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Breakthrough: The Ideas That Changed the WorldThe Rocket
Breakthrough: The Ideas That Changed the World
The Ultimate Rocket Fuel
Jim Al-Khalili demonstrates why hydrogen is the ultimate rocket fuel.
Clip: Ep5 | 2m 27s
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Episode 5 Preview | The Rocket
Blast off into history to see how rockets originated not in the sky, but in a cave.
Preview: Ep5 | 30s
The Rocket Equation
Franklin Chang-Diaz demonstrates the energy required to launch a rocket into space.
Clip: Ep5 | 2m 29s
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