Mars
In astrology, Mars is the planet of action, aggression, desire and drive. It is the traditional and primary ruler of Aries and, before Pluto's discovery in the 20th century, was also considered co-ruler of Scorpio — a rulership modern astrology has since split between the two planets.
Last reviewed: 2026-07-20
Historical fact
Mars is named for the Roman god of war (Greek equivalent: Ares). Its surface has a reddish color, caused by iron oxide (essentially rust) in the dust and rock covering it, visible to the naked eye even in antiquity. This reddish hue independently led multiple ancient civilizations — the Babylonians, Egyptians and Chinese, among others — to associate the planet with blood, war and fire. It's a striking case of convergent observation across cultures with no direct contact with one another, rather than one tradition borrowing from another.
Interpretation — Western Astrology (Tropical)
In modern Western astrology, Mars represents the energy of action, assertiveness, desire and the drive to assert oneself. It is the traditional and primary ruler of Aries; before Pluto's discovery in 1930, it was also considered co-ruler of Scorpio, a rulership modern astrology has since split between the two planets, though many traditional astrologers still recognize Mars as the classical ruler of both signs.
Interpretation — Vedic Astrology (Sidereal)
In the Vedic system (Jyotish), Mars is called Mangala and is linked to land, property and real estate. A central concept with no precise Western equivalent is 'Mangal Dosha' (also called 'Kuja Dosha'): when Mars occupies certain positions in the birth chart, it is considered capable of affecting marriage compatibility, a topic treated in great detail in Vedic practice when assessing marriages.
This section presents one tradition's interpretation, not a verifiable fact.
Frequently asked questions
- Why is Mars red, and what does that have to do with astrology?
- Mars's reddish color comes from iron oxide (rust) on its surface, visible to the naked eye. This hue led several ancient civilizations — the Babylonians, Egyptians and Chinese, among others — to independently associate the planet with blood, war and fire, long before any astronomical explanation for its surface composition existed.
- What is Mangal Dosha in Vedic astrology?
- Mangal Dosha (or Kuja Dosha) is a specific Vedic astrology concept that assesses how the position of Mars (Mangala) in the birth chart can affect marriage compatibility. It's a topic elaborated in detail in Vedic practice, without a precise equivalent in Western astrology.
Sources
- Nicholas Campion. A History of Western Astrology (2009).
- Claudius Ptolemy. Tetrabiblos (c. 150).
- Maharishi Parashara (trans. R. Santhanam). Brihat Parashara Hora Shastra (1984).
- David Pingree. From Astral Omens to Astrology: From Babylon to Bīkāner (1997).