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Dione (moon) (720 words) |
 | Dione is composed primarily of water ice, but as the densest of Saturn's moons (aside from Titan, whose density is increased by gravitational compression) it must have a considerable fraction of denser material like silicate rock in its interior. |
| One theory was that shortly after its formation Dione was geologically active, and some process such as ice volcanism resurfaced much of its surface, with the streaks forming from eruptions along cracks in Dione's surface that fell back to the surface as snow or ash. |
| This suggests that during the period of heavy bombardment, Dione was tidally locked to Saturn in the opposite orientation. |
| Dione: Information from Answers.com (326 words) |
| Dione in Greek mythology is a vague goddess presence who has her most concrete form in Book V of Homer's Iliad as the mother of Aphrodite: Aphrodite journeys to Dione's side after she has been wounded in battle while protecting her favorite son Aeneas. |
| Although Dione is not a Titan in Hesiod, but appears instead in his Theogony among the long list of Oceanids, Apollodorus includes her among the Titans (1.1.3 and 1.3.1). |
| The archaic king Tantalus in Lydia had Dione as a consort: the Roman mythographer, Hyginus, (Fabulae 82, 83) says that Dione is a daughter of Atlas and the mother, by Tantalus, of Pelops, Niobe and Broteas. |
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