Molecular oxygen icons around the Saturn icy moon.by the NASA Cassini space craft .The oxygen icons are 0.67 cubic inches around the space that typically shows about the Dione thin neutral atmosphere.In the place of Dione surface the atmosphere is dense like the earths atmosphere 300miles.This faint amosphere is known as exosphere. Robert Toker said that "We now know that Dione, in addition to Saturn's rings and the moon Rhea, is a source of oxygen molecules," Amanda Hendrix said that "Scientists weren't even sure Dione would be big enough to hang on to an exosphere, but this new research shows that Dione is even more interesting than we previously thought,"
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