👉 Neptunism is a concept in astrology, which interprets the positions of the planets around the sun as signs of personal development and spiritual growth. The term comes from Greek mythology, where Neptune was the god of the sea, and his position on the celestial chart represented the direction of the winds or the course of the sea. In astrology, Neptune is often associated with leadership, creativity, and the arts, while Pluto is associated with authority, power, and the underworld.