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A '''rocket''' is an object which gains thrust by expelling a hot gas out of its back. There are two major types of rockets: solid fuel and liquid fuel. Rockets have been used since ancient times and more recently were used for [[space travel]] since many rockets are able to carry their own [[oxygen]].
A '''rocket''' is an object which gains thrust by expelling a hot gas out of its back. There are two major types of rockets: solid fuel and liquid fuel. Rockets have been used since ancient times and more recently were used for [[space travel]] since many rockets are able to carry their own [[oxygen]].
[[Category:Science]]
[[Category:Space Exploration]]