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WOW 1-2
1st 9 Weeks Group 2
Term | Definition |
---|---|
solar system | eight planets and their moons in orbit around the sun together with comets, asteroids, and meteors |
galaxy | system of millions or billions of stars held together by gravity |
orbit | curved path of a celestial object around a star, planet, or moon |
planet | celestial body moving in an elliptical orbit around a star |
ellipse | oval shaped orbit |