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Saturn's rings contain myriad chunks of ice and rocks that scientists don't consider moons. Yet embedded in the rings are distinct moons. Size -- and the ability to be noticed -- has so far played a role in being designated a moon.
Yet some moon-like objects are so small they are invisible. Hydrogen atoms at the outer fringes of Earth's atmosphere orbit the planet in an arguably moon-like manner.
"We don't call those satellites," says Alan Stern of the Southwest Research Institute (SwRI), making a firm delineation between moon and non-moon at least at the very lower end of the size spectrum. Dust grains, too, are out, Stern says. From there on up, however, nobody has thought much about where to draw the line, if at all, on what constitutes a moon.
"There is no accepted definition," Stern said.
Originally posted by Schmidt1989
reply to post by InfaRedMan
I guess it really doesn't matter about size
but then why don't all the debris in Saturn's rings get classified, they all orbit Saturn in a path. Right?