Planetae

The planetae (Ancient Greek: πλανήται, romanized: planetai, Latin: planetae, lit. 'wanderers', or Ancient Greek: πλανωμένοι ἀστέρες, romanized: planomenoi asteres, Latin: stellae errantes, lit. 'wandering stars'), were the five naked-eye planets (the Classical planets) known to ancient Greek and Roman astronomers, who assigned them a variety of names, associated them with different gods, and ascribed various qualities to their apparent behaviour in the sky. Some scholars included the Sun and Moon, making seven planets, representing the seven heavenly bodies that moved against the fixed background of stars. This concept survives in astrology, which was not clearly differentiated from astronomy before modern times. Others added the fixed stars, representing a single planet, along with the earth itself, and the antichthon, to make a system of ten.