Sign Dossier
♈Aries occupies the first 30° arc of the ecliptic in the twelve-fold division fixed by Babylonian astronomers by roughly the 5th century BCE.
Its opening position was carried forward largely unchanged into Hellenistic astronomy and formalized in Ptolemy's Tetrabiblos in the 2nd century CE, where the wheel's count still begins here.
The constellation itself is faint — only two stars of note, Hamal and Sheratan — which is part of why its zodiacal importance rests on position in the sequence rather than visual prominence.
Ruled by Mars, tradition reads Aries as cardinal fire: the sign that starts things, acts before it deliberates, and burns hot rather than long.
As the first sign, it is traditionally associated with beginnings, raw initiative, and a kind of unrefined courage — the impulse before the plan.
In modern astrology content, Aries is shorthand for main-character energy: impulsive, competitive, first in line and first to leave the conversation.
In Greek myth, the ram whose golden fleece Jason and the Argonauts sailed to retrieve is said to have carried Phrixus to safety across the sea before being sacrificed and its fleece hung in a sacred grove — the origin most often cited for the sign's imagery, though the ram symbol in this part of the sky predates the story.
| Range | Source | Ruler |
| 0°–10° | own decan | Mars |
| 10°–20° | from Leo | Sun |
| 20°–30° | from Sagittarius | Jupiter |
Alpha Arietis, the constellation's brightest star, marking the ram's head.