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Unit 2 lesson 1+2

Vocab terms

TermDefinition
Solar system The sun and all of the planets and other bodies that travel around it.
Galaxy A collection of stars, dust, and gas bound together by gravity.
Planet A relatively large spherical body that orbits a star.
Light year The distance that light travels in one year; about 9.46 trillion kilometers.
Star A large celestial body that is composed of gas and that emits light; the sun is a typical star
Universe Space and all the matter and energy in it
Lumino
Created by: Carlos 13
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