Chemical Rocket Engine
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PHYSICS
Rocket Propulsion
Chemical Rocket Engine
Chemical rockets carry their own oxidizer to operate in the vacuum of space and achieve escape velocity
25 Jan 2026
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Why do chemical rocket engines carry their own oxidizer instead of relying on atmospheric oxygen?
Because they need to operate in the vacuum of space where there is no atmospheric oxygen
Because carrying oxidizer increases the rocket's speed beyond escape velocity
Because atmospheric oxygen is too reactive to be used safely in rocket combustion
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