1. the solar system
Mars also has no magnetic field. " Because the atmosphere of mars is so thin, wind velocities up to several hundred Km per hour are required to raise the dust particles during a dust storm, and these fast- moving particles erode structures with a sand-blasting effect " (Grolier, 1992). ... The ring particles must generally be about as big as the wavelength of light, that is, only a few microns " (Grolier, 1992). ... The color is from the gaseous atmosphere and the dust particles in that atmosphere. ... Uranus also has rings but unlike Saturn these rings have almost no small...
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- Grade Level: High School