Uranus (mythology) castrated Uranus, from Uranus' blood, which splattered onto the earth, came the Erinyes (Furies), the Giants, and the Meliae. Also, according to the "Theogony", Cronus threw the severed genitals into the sea, around which "a white foam spread" and "grew" into the goddess Aphrodite, although according to Homer, Aphrodite was the daughter of Zeus and Dione. In the Olympian creation myth, as Hesiod tells it in the "Theogony", Uranus came every night to cover the earth and mate with Gaia, but he hated the children she bore him. Hesiod named their first six sons and six daughters the Titans, the
Moons of Uranus objects: their geometrical albedo varies between 30 and 50%, whereas their Bond albedo is between 10 and 23%. Umbriel is the darkest moon and Ariel the brightest. The masses of the moons range from 6.7 kg (Miranda) to 3.5 kg (Titania). For comparison, the Moon has a mass of 7.5 kg. The major moons of Uranus are thought to have formed in the accretion disc, which existed around Uranus for some time after its formation or resulted from a large impact suffered by Uranus early in its history. All major moons comprise approximately equal amounts rock and ice, except Miranda,