What the two signs have in common
Facts about the two signs as traditional astrology lists them. The reading below is built from these rows.
| Fact | Aries | Cancer |
|---|---|---|
| Aspect between the signs | Square, 90° | |
| Element | Fire | Water |
| Quality the elements share | None | |
| Modality | Cardinal | Cardinal |
| Traditional ruler | Mars | Moon |
| Modern ruler | Mars | Moon |
| How the rulers relate | A light and a personal planet | |
The aspect between the signs
A square joins two signs of the same modality in different elements. It is the traditional aspect of tension: both want to do the same kind of thing, whether starting, holding or adjusting, and each does it in a way the other finds unnatural.
Elements and modalities
Fire is hot and dry, water cold and moist: they share no quality, and the classical scheme counts them as the most opposed pair of elements. Water can put out fire, and fire can evaporate water.
Both signs start things: cardinal signs open the seasons, and both act first.
The rulers
One ruler is a light (Mars or Moon) and the other a personal planet. The first stands for core identity or need, the second for a way of acting, relating or thinking.
Mars stands for: drive, anger, initiative, courage. Moon stands for: feeling, need, habit, memory.
The two signs together
Aries tends to bring initiative: it says what it wants and starts before it is certain. It tends to need room to act without explaining each step, and a direct answer.
Cancer tends to bring protectiveness: care, memory and a strong sense of home. It tends to need reassurance, and a safe place to say what it feels.
Aries acts first and explains later, while Cancer remembers how it felt. Directness lands harder here than Aries usually intends.
What tends to come easily
- Strong motivation; each pushes the other to act.
- Each has something the other lacks: warmth on one side, depth on the other.
- There is initiative on both sides.
- One sets the tone and the other supplies the method.
What tends to cost something
- Friction is regular, and it usually comes from method rather than from aim.
- The same intensity is felt by one as too much and by the other as too little.
- Both want to lead, and who follows is left unsettled.
- Core needs and daily habits can pull in different directions.
What two Sun signs cannot say
Two Sun signs are a small part of two charts. The Moon, Venus, Mars, the rising sign and the houses of each person shape how a relationship goes, and so do age, circumstance and choice.
The aspect here is counted between signs, not between degrees. Two people born at the start and at the end of the same sign stand differently from two born at the same degree, and this page cannot tell which applies.
To compare two actual people, the synastry tool takes both birth dates and shows the aspects between the planets.