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Outer Space
Science
Term | Definition |
---|---|
moon | the Earth's natural satellite, which orbits the Earth. |
orbits | to move or travel around in an orbital or elliptical path. |
solar system | the sun together with all of the planets and other bodies that revolve around it. |
atmosphere | the gaseous envelope that surrounds the Earth; the air. |
astronomy | the science that deals with the material universe beyond the Earth's atmosphere. |
galaxy | a large system of stars held together by mutual gravitation and isolated from similar systems by vast regions of space. |