There are multiple origins and translations for the name Luna:
1. Latin name means - "the Moon".
2. Alchemical name for silver.
In Roman mythology Luna is the divine embodiment of the Moon. She is often presented as the female complement of the Sun. Luna is not always a distinct goddess, but sometimes rather an epithet that specializes a goddess, since both Diana and Juno are identified as moon goddesses. Greek form - Selene.