sentences: the moon is a mean of stripe & the space revolves around the moon & space is a mean of sun ->  the earth revolving around the sun is an example of a planet revolving around its star  the earth revolving around the sun is an example of a planet revolving around its star & a complete evolution / deorbit of a sun around its stripe solids 0 / zero planetary second -> a complete revolution of the earth around the sun will take one earth year