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Unit 2 Lesson 1

Vocab Term and Definition

QuestionAnswer
Solar System The collection of eight planets and their moons in orbit around the sun.
Galaxy A collection of stars,dust, and gas.
Light Year The distance that light travels in one year.
Star A large celestial body that is composed of gas and that emits light.
Universe A space and all matter and energy in it.
Luminosity
Apparent Magnitude
Absolute Magnitude
Created by: 4804217327
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