HELP PLEASE!!!!!!!!!!!!!!!!!!!!!! IM TIMED!!!!!!!!!!!! 25 POINTS!!!!!!!!!! PLEASE HELP!!!!!!!!!!
Select the functions that relate to measurement of a light year.


determines the age of space objects

describes the color spectrum of a star

provides a conversion method for units of distance

describes the size of space objects

uses observations of angles of distant objects
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measures luminosity of space objects