Zeus was the ruler of the Greek gods in Greek mythology. When the Romans adopted many of the Greek gods, Zeus' name was changed to Jupiter. The Greek gods were believed to live on the top of Mount Olympus. They were human in appearance but immortal and possessed of all sorts of supernatural powers. Zeus is associated with lightning; he hurled lightning bolts at mortals if they displeased him. He had a wife named Hera, but he was always getting into trouble (like some moral men) for cheating on her. The wife of Jupiter in Roman mythology was named Juno, and we are more familiar with the Roman gods by name than by the original Greek gods. Many planets are named after Roman gods. The largest planet is Jupiter. There are also Mars (god of war), Mercury (messenger of the gods), and Venus (goddess of love), all of whom have Greek counterparts. You can find abundant information about Greek mythology by starting with the reference link below. Greek mythology is full of fascinating stories about the Greek gods and how they supposedly interacted with mortals. English literature is full of allusions to the Greek and Roman gods.