Why do some rockets carry oxygen in addition to fuel?

Why do some rockets carry oxygen in addition to fuel?

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Answers (4)

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Whisker_Queer
There is no oxygen in space, and if you were to not have any oxygen you'd die.
on October 20, 2014
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kittygirl4133
if your in space in a rocket your going to need oxygen because if you run out of oxygen there are tanks to release more into the rocket
on July 01, 2014
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poparty476
beacause the people could get lost and loose thair helmet so they will get some oxygen if they take it
on November 17, 2013
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RosenEliza
Because of the weight difference. Fuel weighs 8.66 lbs while oxygen weighs 16g. The weight matters because of the speed the rocket has to go. Fuel may slow it down. And oxygen can speed it up.
on October 22, 2013
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