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 | Sagittarius |
|---|---|---|
| Aspect between the signs | Trine, 120° | |
| Element | Fire | Fire |
| Quality the elements share | hot · dry | |
| Modality | Cardinal | Mutable |
| Traditional ruler | Mars | Jupiter |
| Modern ruler | Mars | Jupiter |
| How the rulers relate | A personal and a social planet | |
The aspect between the signs
A trine joins two signs of the same element in different modalities. It is the classical aspect of ease: a shared temperament with a different pace of acting on it.
Elements and modalities
Two fire signs share both qualities, hot and dry. They are quick to start, quick to warm up and quick to flare, and the tradition reads the pairing as energetic and impatient.
One sign starts and the other adapts: a cardinal sign opens, a mutable sign adjusts.
The rulers
One ruler is a personal planet and the other a social planet, Jupiter or Saturn. The first deals in daily manner, the second in long horizons: belief, duty and limits.
Mars stands for: drive, anger, initiative, courage. Jupiter stands for: expansion, meaning, confidence, excess.
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.
Sagittarius tends to bring openness: frankness, humour and appetite for what is new. It tends to need freedom, and honesty returned in kind.
Two fire signs with a taste for freedom. Plans are made quickly and spoken bluntly, and patience for detail is in short supply on both sides.
What tends to come easily
- A shared way of feeling and reacting, with little to translate.
- Energy and enthusiasm match.
- Direction from one side and flexibility from the other.
- Daily manner and long-term purpose can support each other.
What tends to cost something
- Comfort can slide into complacency, since nothing demands change.
- Both flare, and neither is the one who cools things down.
- Adapting can slide into being led, and leading into not listening.
- What one does lightly the other may take as a matter of principle.
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.