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universe
Question | Answer |
---|---|
solar system | the sun and all of the planets and other bodies that travel around it |
planet | a relatively large spherical body that orbits a star |
star | a large celestial body that is compsed of gas that emits light |
galaxy | a collection of stars, dust, and gas bound together by gravity |
light-year | the distance that travels in one year |
universe | space and all the matter and energy in it |