☉Western astrology · 5 min
In astrology, the planets do not "cause" events; according to tradition they mark symbolic roles. Modern, psychologically oriented astrology calls them archetypes, following Carl Gustav Jung, who described archetypes as shared, ancient patterns of humanity (the Mother, the Hero, the Shadow, and so on). The summary below gives the traditional meanings, as hypotheses.
Personal planets
- Sun: identity, vitality, the urge for self-expression. The question "who am I?"
- Moon: emotional needs, habits, the sense of security, memory. The question "what do I need?"
- Mercury: thinking, speech, learning, exchange of information. The question "how do I grasp and pass things on?"
- Venus: attraction, values, aesthetics, relating, pleasure. The question "what do I value and love?"
- Mars: drive, anger, initiative, desire, assertion. The question "what do I want and how do I go after it?"
Social planets
- Jupiter: growth, abundance, the search for meaning and faith, generosity. The question "does it make sense?"
- Saturn: structure, boundaries, responsibility, time, perseverance. The question "what holds me, what limits me?"
These seven are the classical planets: visible to the naked eye, and therefore known to ancient tradition.
Outer (generational) planets
- Uranus (discovered by William Herschel in 1781): innovation, freedom, rupture, independence.
- Neptune (1846): imagination, dissolution, spirituality, illusion.
- Pluto (1930, Clyde Tombaugh; a dwarf planet in astronomy since 2006): power, deep transformation, taboos and hidden forces.
Because the outer planets move slowly (Uranus takes 84 years, Neptune about 165 and Pluto about 248 to orbit the Sun), a whole generation carries them in the same sign, so personal interpretation rests more on the house and the aspects.
How do sign and house fit in?
A planet's role is coloured by its sign (style) and anchored to a stage by its house. Mars (drive) in Leo (theatrical, generous) in the 6th house (work, routines) might, in the tradition's reading, suggest conspicuous energy expressed through work. It is always wise to use the phrase "it may be that...".
Archetype or label?
In the Jungian tradition an archetype is not a finished casting but a pattern that each individual fills out in their own life. A good astrological reading therefore asks: "How does the Saturn theme (responsibility, limits, time) appear for you?" A bad reading labels: "Saturn in the 7th house, so your relationships will be difficult." The latter is a verdict that no research supports.
Scientific perspective
Jung himself investigated astrology (he described his experiment with marriage charts in his essay on synchronicity), but by today's statistical standards the results are not convincing, and astrology's predictive power has not been confirmed in controlled studies. The archetype concept is a psychological and cultural metaphor, not a measurable factor. Still, symbolic roles are good tools for thinking about our inner motivations: behind the names Mars, Venus or Saturn lie genuine human themes.