Mission to Mars

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inner planets

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The smaller rocky planets inside the asteroid belt; Mercury, Venus, Earth, and Mars

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mission

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A specific job or task to perform; a flight operation of an aircraft or spacecraft, as in a space mission

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payload

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The load carried by an aircraft or spacecraft

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scenario

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A story-line of a possible course of events or actions, especially when imagined

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rescue

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To save from danger

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resource

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Anything that can be used for something

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outpost

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A frontier settlement

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simulation

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A practice activity which duplicates the actual situation as closely as possible

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specialist

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A person who is particularly knowledgeable about a certain job

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plot

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To mark a location on a graph or map