Ariel

"Following the pattern of naming the moons of Uranus after characters from English literature, Ariel is actually named after two: a sky spirit in both Alexander Pope's 'The Rape of the Lock' and Shakespeare's 'The Tempest'."It is a frigid world comprised of roughly equal parts ice and rock, with a surface relatively free of craters, indicating that it was completely resurfaced some time in its history. It is a world of extremes (daylight on each side of the moon lasts for 42 Earth-years), but it is a challenge your settlers are eager to overcome."