Moons of Jupiter

Io may be one of the slightest names in the book, but there aren't many two-letter names with as much substance as this Greek mythological example. Io, a name used for the largest moon of Jupiter, was in classic myth raped by Zeus and escaped from him by changing herself into a cow.

Kore is the original Greek form of the modern Cora, a name that's heading straight for the top of the charts in the English-speaking world. Kore was an alternate name for Persephone, goddess of the underworld. Spelling the name Kore may tip it toward the short form Kory or Korey.

Leda is that rare name that has not yet been discovered in the current craze for ancient names from mythology. In classical Greek myth, Leda was a great beauty who mothered another great beauty, Helen of Troy. Leda is at once simple, deeply-rooted, and unique: Only 23 baby girls were named Leda in the US last year. A name used in several European countries, pronunciation is usually the straightforward lee-dah but the Italians say lay-dah.