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Vocabulary - Unit 2:

QuestionAnswer
solar system the sun and all of the planets and other bodies that travel around it.
planet a relatively large sherical body that orbits a star
star a large celestial body that is composed of gas that emits light
galaxy a collection of gas dust and gas
light year the distance that light travels in one year
universe space and all the mater and energy in it
solstice the point at which the sun is as far north or south of the equator
star a large celestial body that is composed of gas that emits light
apparent magnitude the brightess of a star as seen from earth
luminostity the actual brightness of an object such as a star
absolute magnititude measure of how bright a star would be if it were seen from a standard distance
Created by: Chrisman1011130
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