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voab terms

TermDefinition
solar system the sun and 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 travel in one years about 9.46 trillion kilometer.
star a large celestial body that is compose of gas and that emits light the sun is a typical.
universe space and all the matter and energy in it.
luminosity the actaul brightness of an object such as a star .
apparent magnitude the brightness of a star as seen from earth
absolute magnitude a measure of how bright a star would be if it were seen from stanard distance.
Created by: 480405418
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