Even Beyond Saturn, Comets Can Fade And Lose Their Shine
Even beyond the orbit of Saturn , previously thought to be part of their safe zone , comets lose fickle ice and become fainter over millions of years . What causes this alteration remain a mystery , but the solution may excuse some other stick observations of glacial objects in the out Solar System . Every few years , Earth is dazzle by a comet jaw the inner Solar System , making its first pass – orfirst for tens of thousandsof years – close to the Sun ....