What is Mars in Western astrology?

Definition

Mars is the planet that Western astrology assigns to the signs Aries and Scorpio, with exaltation in Capricorn and fall in Cancer, a symbolic table of rulership and dignity taken from Ptolemy's Tetrabiblos.

In plain words

Mars is one of the seven classical planets in Western astrology, and astrologers treat it as a symbolic figure rather than a physical force. Its astrological meaning rests on a long tradition of rulership, dignity, and sect assignments, which are symbolic table relationships and not claims about physical control. Ptolemy's Tetrabiblos describes Mars as dry and burning, ties this to his fiery colour and nearness to the sun, and assigns him to the nocturnal sect.

Also asked as

• What does Mars represent in Western astrology?
• Which signs does Mars rule?
• How long is Mars's orbit and synodic cycle?
• How often is Mars retrograde?

History

Mars has been observed throughout history and has acquired diverse associations in different cultures, appearing to the naked eye as a red wandering star. In the traditional Greek and Roman sense it is associated with the god of war, and German Renaissance planet books paired Mars with the Titans Crius and Dione. Those planet books also linked Mars with the child qualities of soldiering and warfare. Ptolemy's Tetrabiblos states that the ancients classed Mars with the masculine planets, along with the sun, Saturn, and Jupiter, while Mercury was treated as common to both genders. Later readers can compare these older classifications with modern measurement to see how each tradition describes the same red planet in its own terms.³⁴¹

Quick timeline

1. Early record — Mars has been observed throughout history and has acquired diverse associations in different cultures, appearing to the naked eye as a red wandering star. In the traditional Greek and Roman sense it is associated with the god of war, and German Renaissance planet books paired Mars with the Titans Crius and Dione. Those planet books also linked Mars with the child qualities of soldiering and warfare. Ptolemy's Tetrabiblos states that the ancients classed Mars with the masculine planets, along with the sun, Saturn, and Jupiter, while Mercury was treated as common to both genders. Later readers can compare these older classifications with modern measurement to see how each tradition describes the same red planet in its own terms.³⁴¹
2. Classical framework — In Ptolemy's Tetrabiblos, the nature of Mars is chiefly to dry and to burn, a description the text ties to his fiery colour and to his nearness to the sun, since the sun's sphere lies just below him. Ptolemy groups Saturn and Mars together as producing effects of the opposite nature to the beneficent planets, with Mars set apart for his excessive dryness. In the table of planetary symbolism, Mars is linked to the Roman god of war, the Greek god Ares, and the Babylonian god Nergal, and is associated with strength, aggression and anger.¹⁴
3. Later transmission — Modern readers meet Mars first as a planet described by astronomy. Wikipedia's article on Mars explains that it is the fourth planet from the Sun, often called the Red Planet for its orange-red appearance, and that it is a desert-like rocky world with a tenuous atmosphere made mainly of carbon dioxide. In modern astrological practice, Mars is classed among the personal planets, which modern-era astrologers describe as representing the basic human drives of every individual. Wikipedia's article on Mars gives its orbit as about 687 Earth days, and it notes a surface gravity roughly a third of Earth's.³⁴

What classical and modern sources say

Classical view

In Ptolemy's Tetrabiblos, the nature of Mars is chiefly to dry and to burn, a description the text ties to his fiery colour and to his nearness to the sun, since the sun's sphere lies just below him. Ptolemy groups Saturn and Mars together as producing effects of the opposite nature to the beneficent planets, with Mars set apart for his excessive dryness. In the table of planetary symbolism, Mars is linked to the Roman god of war, the Greek god Ares, and the Babylonian god Nergal, and is associated with strength, aggression and anger.¹⁴

Modern view

Modern readers meet Mars first as a planet described by astronomy. Wikipedia's article on Mars explains that it is the fourth planet from the Sun, often called the Red Planet for its orange-red appearance, and that it is a desert-like rocky world with a tenuous atmosphere made mainly of carbon dioxide. In modern astrological practice, Mars is classed among the personal planets, which modern-era astrologers describe as representing the basic human drives of every individual. Wikipedia's article on Mars gives its orbit as about 687 Earth days, and it notes a surface gravity roughly a third of Earth's.³⁴

Rulership, cycles and traditional nature

Rulership

Mars rules Aries and Scorpio in the traditional table. Its exaltation is Capricorn, and its fall is Cancer. These rulership and dignity relationships are symbolic table relationships, not claims of physical control. Ptolemy's Tetrabiblos sets out this table as part of the classical system that later astrologers inherited.¹

Sect

Ptolemy's Tetrabiblos assigns Mars to the nocturnal sect and describes him as hot and dry. These are historical symbolic classifications rather than observed traits. Sect organizes the classical planets into day and night groupings, which astrologers use as a structural rule when they judge a planet's position in a chart.¹

Measured cycles

NASA lists an orbital period of 686.98 days and a synodic period of 779.94 days. These measured cycles stay separate from astrological interpretation, so they should not be read as symbolic meanings. Readers who compare the two sets of figures can see where the measured record ends and the symbolic table begins.¹

Symbolic associations

The table of planetary symbolism links Mars to the Roman god of war, the Greek god Ares, and the Babylonian god Nergal. It is also associated with strength, aggression and anger. These associations are cultural and historical, and they describe how the planet has been understood in symbolic systems over time.⁴

The astronomy

Mars completes an orbit in about 687 Earth days, and its solar year equals 1.88 Earth years, while a Martian solar day lasts about 24.6 hours, according to Wikipedia's article on Mars. Those figures come from measurement of the planet's motion and rotation, so they describe physical cycles rather than symbolic roles in a chart.³

NASA lists an orbital period of 686.98 days and a synodic period of 779.94 days. These measured cycles remain separate from astrological interpretation, which keeps measured quantities from being confused with symbolic meanings.¹

Where astrologers differ

Ptolemy's Tetrabiblos assigns Mars to the nocturnal sect and gives him Capricorn as exaltation and Cancer as depression. It says he is exalted in Capricorn because he is farthest south there. Wikipedia's article on Mars gives a surface gravity roughly a third of Earth's and a mean diameter about half of Earth's, and it notes two small, irregular natural satellites, Phobos and Deimos.

Then and now

Then

In Ptolemy's Tetrabiblos, the nature of Mars is chiefly to dry and to burn, a description the text ties to his fiery colour and to his nearness to the sun, since the sun's sphere lies just below him. Ptolemy groups Saturn and Mars together as producing effects of the opposite nature to the beneficent planets, with Mars set apart for his excessive dryness. In the table of planetary symbolism, Mars is linked to the Roman god of war, the Greek god Ares, and the Babylonian god Nergal, and is associated with strength, aggression and anger.¹⁴

Now

Modern readers meet Mars first as a planet described by astronomy. Wikipedia's article on Mars explains that it is the fourth planet from the Sun, often called the Red Planet for its orange-red appearance, and that it is a desert-like rocky world with a tenuous atmosphere made mainly of carbon dioxide. In modern astrological practice, Mars is classed among the personal planets, which modern-era astrologers describe as representing the basic human drives of every individual. Wikipedia's article on Mars gives its orbit as about 687 Earth days, and it notes a surface gravity roughly a third of Earth's.³⁴

Worked out from the evidence

Reasoned from the cited facts, not stated outright by any one source.

Because Ptolemy's Tetrabiblos places Mars in the nocturnal sect while the Mars article describes a planet of low gravity and small moons, a reader can see that the astrological assignment and the physical description rest on different kinds of evidence.

Since the Tetrabiblos ties Mars's fiery nature to his nearness to the sun and the modern article describes Mars as a fourth-planet desert world, the classical reasoning about heat and dryness can be compared with a present-day physical account, while the symbolic meaning is kept apart.

Not yet confirmed

• Whether the Tetrabiblos's linking of Mars's fiery colour to his nearness to the sun was a settled classical explanation or one of several competing accounts is not settled by these sources.

Follow the parts of Mars

Continue through Venus, Jupiter.

Questions people also ask

What does Mars represent in Western astrology?

In the table of planetary symbolism, Mars is linked to the Roman god of war, the Greek god Ares, and the Babylonian god Nergal, and is associated with strength, aggression and anger.⁴

Which signs does Mars rule?

In the traditional table, Mars rules Aries and Scorpio. Its exaltation is Capricorn and its fall is Cancer, which are symbolic table relationships rather than claims of physical control.¹

How long is Mars's orbit and synodic cycle?

NASA lists an orbital period of 686.98 days and a synodic period of 779.94 days. These measured cycles are kept separate from astrological interpretation, so they should not be read as symbolic meanings.¹

Method and review

Every statement about Mars was checked against the wording of its 5 sources (Ptolemy (LacusCurtius), Encyclopaedia Britannica and Wikipedia), and its positions and boundaries were calculated with Astronomy Engine. How the Machine works.