Combustion is a severe solar affliction in a geomantic chart. It occurs when Fortuna Major stands in X opposition to the house of the Querent or the house of the Quesited. This rule belongs only to Fortuna Major. Fortuna Minor does not produce Combustion and cannot replace Fortuna Major in this rule. At the same time, Fortuna Major can combust Fortuna Minor if Fortuna Minor occupies the house of the Querent or the Quesited and Fortuna Major stands in opposition to that house.
The reason lies in the nature of Fortuna Major itself. This is the figure of Greater Fortune, solar strength, dignity, authority, victory, and durable success. It is the image of the rising or midday A Sun—the Sun strong, visible, established, and able to confer victory.
But the Sun can act as a benefic or as a malefic, depending on its position. In the right place, it illuminates, strengthens, gives life, and leads toward victory. In opposition to the house of the Querent or the Quesited, that same power becomes adverse: it no longer lights the path, but burns the field in which the matter must take root.
Astrological Background
In horary astrology, Combustion and being under the Sun’s beams are conditions of proximity to the A Sun. A planet that comes too close to the Sun loses visibility, freedom of action, and the ability to show clearly what it promises.
Traditional astrology also knows another solar affliction: X opposition to the A Sun. This is not proximity to the Sun, but direct confrontation with solar force. The planet is not hidden beside the Sun; it stands opposite the Sun and is struck through opposition.
Geomantic Combustion and Subradiation follow this second model. They are not produced by closeness to a solar figure, but by the opposition of Fortuna Major to the house of the Querent or the Quesited.
Therefore, Company with Fortuna Major is not Combustion. Company with Fortuna Major may show union, participation, closeness, support, or a special connection with the solar figure, depending on the kind of Company and the context. But it does not burn the house in the way that opposition from Fortuna Major does.
What Is Afflicted
Combustion afflicts not the figure standing in the house, but the house itself and the matter of that house.
By analogy with traditional astrology, this may be understood as though the A Sun, standing in X opposition to the cusp of a house, afflicts the house and its power to act. What is damaged is not a particular planet or figure inside the house, but the field of action belonging to that house.
For this reason, it is not decisive which figure occupies the afflicted house. The seed is not the main issue; the ground itself is burned. Even a good figure cannot freely bear fruit if the house itself is scorched.
Combustion and Subradiation
The difference between Combustion and Subradiation depends on how many figures of Fortuna Major appear in the chart.
If there is only one Fortuna Major in the chart, and it stands in opposition to the house of the Querent or the Quesited, the result is Combustion. This is the full solar affliction. The matter of the house is burned, damaged, deprived of strength, or unable to come freely to a fortunate result.
If there are several figures of Fortuna Major in the chart, and one of them stands in opposition to the house of the Querent or the Quesited, the result is Subradiation—being under the rays of the Sun. It still afflicts the house, but less severely than Combustion. The other appearances of Fortuna Major disperse part of the solar heat through the chart, making the destructive force of that one opposition less final.
The word Subradiation comes from the Latin sub radiis, “under the rays.” Sub means under or beneath, and radiis is the ablative plural of radius, a ray or beam of light. In astrological language, this is the same root idea as being under the Sun’s beams. In geomancy, however, Subradiation is not caused by conjunction or closeness to the Sun. It means that the solar affliction exists, but its force is not concentrated in a single, solitary Fortuna Major.
In short:
- One Fortuna Major in the chart + opposition to the house of the Querent or Quesited = Combustion.
- Several figures of Fortuna Major in the chart + one of them opposing the house of the Querent or Quesited = Subradiation.
A Special Form of Subradiation: A Solar Blow with Support
Sometimes the chart shows a more complex form of Subradiation. This happens when one Fortuna Major stands in opposition to the house of the Querent or the Quesited, while another Fortuna Major forms Company with the figure occupying that same house.
In this case, solar force acts from two directions. On one side, Fortuna Major in opposition strikes the house with a solar blow. On the other side, another Fortuna Major in Company with the figure of that house shows connection, support, or participation from the same solar nature.
This configuration should not always be read as pure destruction. It is still a solar affliction, but its purpose may be not to annihilate, but to shock, awaken, cleanse, restore order, revive, or force the matter back into action.
A good image is a defibrillator. The electric shock strikes the body, but its purpose is not to kill; it is to restore the heart’s rhythm. It is a solar impulse of energy that may bring back what has stopped.
A similar image is radiation therapy, especially in the treatment of tumors. The ray damages, dries, and destroys, but its purpose may be not the destruction of the body, but the destruction of a harmful growth and the preservation of life. This is close to the special form of Subradiation: the solar strike is painful and dangerous, yet in a favorable context it can act as a hard intervention for the sake of restoration.
Other suitable images are a harsh spotlight that blinds and presses, yet reveals what was hidden; solar heating that may be heavy, yet dries dampness and brings motion back to what has become stagnant; an electric impulse that is sharp and painful, yet starts the system again; a strict command of authority that stops disorder and forces the matter into proper motion; or cauterization by heat, where fire damages but may stop decay, corruption, or the loss of vital force.
This form of Subradiation must be judged by the context of the question. If the chart as a whole shows destruction, conflict, and loss, it remains a painful solar injury. But if there are testimonies of recovery, help, correction, or restoration, the same configuration may show a solar blow given for the sake of revival: ray, heat, authority, or solar energy forces the stopped matter to act again.
This must be distinguished from Mars. F Mars cuts, pierces, wounds, spills blood, and acts by the blade. The A Sun illuminates, dries, burns, blinds, commands, and strikes by the ray.
Combustion and Perfection
When the question concerns the completion of a matter, Combustion can often spoil or cancel the desired result shown by Perfection, because the burned house loses the ability to produce a fortunate outcome.
This does not mean that the event itself is always impossible. Perfection may still show contact, meeting, action, union, or completion. Yet when the house of the Querent or the Quesited is under solar affliction, the result takes on a different character: the thing happened, the event occurred, but it cannot truly be called fortunate.
In questions where luck is the very substance of the matter—winning the lottery, winning a prize draw, obtaining a visa through a lottery, or any similar chance-based favorable outcome—this affliction usually points directly to failure. Here the solar opposition does not merely spoil the quality of the result; it undermines the possibility of the fortunate win itself.
Why Greater Fortune Can Become an Affliction
Fortuna Major is ordinarily one of the most favorable figures. It shows great solar force: luck, authority, dignity, victory, vitality, health, sight, clarity, and stable inner power.
But when this power stands in opposition to the house of the Querent or the Quesited, it is directed against that house. Greater Fortune may then become the fortune of the other side, the authority of the opponent, overwhelming pressure, or a solar heat that dries rather than gives life.
This is the heart of Combustion: what could have been a great benefit in the right position becomes a force of injury in the wrong one.
Contracts and Negotiations
In questions about contracts, deals, and negotiations, Combustion may show not only damage to the matter, but an imbalance of power.
If one person or one side is represented by Fortuna Major, and the other side is struck by its opposition, the side of Fortuna Major has more power, influence, or advantage. It is stronger in negotiation, controls the terms more easily, and may impose the course of the matter.
Here Fortuna Major does not show mere luck. It shows a position of power. One side shines like the Sun; the other must act under its pressure.
Love, Enchantment, and Burning with Desire
In relationship questions, Combustion does not always act as pure harm. Sometimes it may be neutral or even favorable, especially when the question concerns attraction, enchantment, desire, admiration, or personal influence.
The word Combustion is connected with the Latin comburo: to burn up, consume by fire, destroy by fire, or reduce to ashes. But the same verbal field also carries the sense of burning with love or being consumed by love. For this reason, the image should not be reduced to destruction alone.
In love questions, Combustion may show that a person does not merely like or want another person; he burns, is consumed, or is inwardly seized by the other’s brightness. Love, desire, or admiration is experienced as heat, fire, dazzling light, or inward captivity.
Another solar image belongs here: the ray as an arrow. In mythic language, love often strikes a person like the arrow of Eros or Cupid. The person does not simply choose the object of desire; he is struck by it.
For this reason, the opposition of Fortuna Major in relationship questions may show a person struck by the arrow of love. One person shines like the A Sun, and the other is seized by that radiance.
If one person is represented by Fortuna Major and the other by another figure, the opposition of Fortuna Major may show that the other person sees him as bright, desirable, powerful, regal, or almost unattainable.
This may indicate attraction, enchantment, adoration, or idealization. The other person may be dazzled, captivated, inclined to place the person of Fortuna Major on a pedestal, or may feel that he is too good, too strong, or out of reach.
In such a case, the solar strike becomes an image of being seized: the person is struck by another’s rays as by arrows of love or adoration.
Blindness and Sight
Because Fortuna Major is connected with the Sun, light, and sight, its opposition may indicate blindness—literal or metaphorical.
In the literal sense, this can matter in questions about the eyes, vision, light, burns, brightness, glare, blindness, or damage to sight.
In the metaphorical sense, Combustion may show that a person does not see the truth of the matter. He is blinded by the strength of the other side, by his own desire, fear, hope, the brilliance of the situation, or excessive confidence. He looks, but he does not discern. The light is too strong, and clarity is lost.
Health, Vital Force, and Exhaustion
Fortuna Major is also connected with health, vital force, and solar vitality. Its opposition to the house of the Querent may therefore be an important testimony in health questions.
In this position, Combustion may show a loss of vital force, overheating, exhaustion, excessive dryness, bodily weakness, or a condition in which the person is inwardly burned out. The solar force does not nourish; it draws away moisture, softness, and the power of recovery.
This is especially important when the question concerns health, energy, recovery, illness, fatigue, or the ability to endure strain.
Rays, Electricity, and Sudden Impact
Combustion may be understood as being struck by solar rays. A ray is light, heat, direction, impact, and the transmission of force across distance. For this reason, in some questions Combustion may indicate a burn, flash, overheating, a sudden energetic blow, or electric shock.
The logic is symbolic: electricity is energy, light, voltage, sudden discharge, and the abrupt release of force. In the traditional symbolic order, the source of light, heat, and vital energy is connected with the Sun. Therefore, solar action through Fortuna Major may appear as a burn, electric shock, flash, overload, short circuit, or other energetic impact.
This meaning is especially fitting if the question concerns machinery, electricity, wiring, lightning, burns, sudden shocks, accidents, or bodily injury from energy.
Military Questions and Ranged Weapons
In military questions, Fortuna Major may indicate archers, marksmen, or weapons that strike from a distance. This comes from the image of solar rays as arrows.
In ancient symbolism, Apollo is especially important: a god of light, prophecy, purification, disease, and archery. His arrows can bring punishment, sickness, death, or a sudden strike. In this sense, the solar ray and the arrow belong to the same symbolic family: power is released from afar, travels in a straight line, and hits the target.
Therefore, in a military or conflict question, Combustion may show that the person, side, or house is under a directed strike from a distance. This may describe shooting, sniper fire, artillery, missiles, drones, lasers, or other forms of ranged attack. In a modern analogy, the archer is not only a man with a bow, but anyone who strikes a target from afar.
This meaning should be applied according to the context of the question. If the chart concerns war, attack, weapons, injury, danger, or the source of a strike, Fortuna Major in opposition may describe a directed blow—as though a solar ray had become an arrow.
The Drying Action of the Sun
Solar affliction may also be understood through the image of excessive dryness.
In its proper measure, the Sun gives vital heat, maturity, clarity, and strength. But when solar heat becomes excessive, it evaporates moisture. With moisture go softness, flexibility, sympathy, receptivity, and the ability to join freely with another.
For this reason, the burned matter becomes drier, harder, and less fruitful. Good may become less good. Evil may become harsher. Possibility may lose the living capacity to grow.
- Combustion dries to the greatest degree.
- Subradiation dries partially.
The fewer figures of Fortuna Major there are in the chart, the more concentrated the solar blow. The more Fortuna Major repeats, the more the solar force is dispersed, and the weaker the affliction of any one opposition becomes.
The rules of Combustion and Subradiation are also applied automatically in the author’s own application available at Geomancy.tools.
Quotes on Combustion and Subradiation
And you must know that the combustion of any planet is the greatest misfortune that can be.
William Lilly, Christian Astrology, Chapter XIX
When a planet promising any good in a question is either in combustion with, or in X opposition to, the A Sun, it never brings that good to pass.
Nicholas Culpeper, Opus Astrologicum, A Century of Aphorisms Appropriated to the Resolving of Horary Questions, Aphorism 39
The matter of any question is obscured, when the planet signifying the thing is either under the earth, or under the A Sun’s beams.
Nicholas Culpeper, Opus Astrologicum, A Century of Aphorisms Appropriated to the Resolving of Horary Questions, Aphorism 75
In all journeys, let not the lord of the Ascendent nor hour be impedited, nor in combustion, nor U square, nor X opposition to the A Sun; neither let the E Moon be in the Ascendent.
Nicholas Culpeper, Opus Astrologicum, Elections and Observations Concerning Journeys, Aphorism 30
The planet which moves beneath the rays of the A Sun is like a man in prison.
Abraham Ibn Ezra, The Beginning of Wisdom, Chapter VIII, § 89
The planet which scintillates is analogous to a man who is on the verge of death.
Abraham Ibn Ezra, The Beginning of Wisdom, Chapter VIII, § 90
A planet retrograde and combust, has no strength in signification. The fortunes when combust and under the A Sun’s beams, signify none or very little good; and the infortunes in like case have little or no virtue to signify ill.
Guido Bonatti, Anima Astrologiæ, Consideration 43
Whether the significator be under the A Sun’s beams, for then he will be of small efficacy in any thing, as aforesaid; yet the malevolents will be something more strong in evil than the benevolents in good.
Guido Bonatti, Anima Astrologiæ, Consideration 53
