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Mars
| Term | Definition |
|---|---|
| craters | big holes in the ground |
| radiation | a kind of energy that can be dangerous if there’s too much of it |
| greenhouse | a glass building used for growing and protecting plants |
| pioneers | the first people to explore or settle in a new place |
| climate | the usual weather in a place |
| scientists | a person who is studying or has expert knowledge of one or more of the natural or physical sciences |
| NASA | the National Aeronautics and Space Administration |
| rovers | robots that explore space but are controlled from scientists on earth |
| mission | an important assignment carried out for political, religious, or commercial purposes, typically involving travel |