Tags: space, saturns, massive, storms, occur, saturnian, earth, white, spots, scientists, saturn, behave, nasajpl-caltechssi
Tags: space, iapetus, covered, ices, material, saturnian, moon
Tags: space, northern, storm, observed, cassini, saturn, white, spots, massive, storms, called, occur, roughly, saturnian, earth, formed, earlier, expected, giving, chance, record