Scorpio
Scorpio is the eighth sign of the tropical zodiac, spanning October 23 to November 21. It is a Water sign, Fixed in modality, traditionally ruled by Mars.
Last reviewed: 2026-07-19
Historical fact
In ancient Babylonian astronomy (recorded in the MUL.APIN compendium, around the 7th century BCE), the sky sector now known as Scorpio was already called GIR.TAB, 'the Scorpion' — one of the oldest continuously-attested constellation figures, essentially unchanged in identity since Babylonian times. The Greeks reattributed the figure to the myth of the scorpion sent (by Gaia or by Artemis, depending on the version) to kill the hunter Orion; the two were placed on opposite sides of the sky so that as one rises the other sets, never visible together. Ptolemy systematized the order of the twelve signs in the Tetrabiblos, around 150 CE, fixing Scorpio as the eighth in the sequence.
Interpretation — Western Astrology (Tropical)
In modern Western astrology, Scorpio is read as the sign of intensity and transformation: Fixed energy (which deepens and sustains) combined with the element Water (emotion, intuition) under the traditional rulership of Mars, the planet associated with force and confrontation — 20th-century Western astrology onward has also assigned Pluto, discovered in 1930, as a co-ruler of the sign, though Pluto is a modern addition and not part of the classical seven-planet system. Commonly associated traits: emotional intensity, depth, resilience, and a strong drive to uncover hidden truths. The shadow side commonly includes jealousy and a need for control.
Interpretation — Vedic Astrology (Sidereal)
In the Vedic system (Jyotish), the corresponding sign is Vrishchika, ruled by Mars (Mangala) and likewise the eighth of the twelve rashis — Vedic astrology uses only the classical nine grahas (Navagraha) and does not assign rulership to Pluto, since it falls outside that system. Because it uses the sidereal zodiac, which accounts for the precession of the equinoxes, Vrishchika's date window is currently shifted relative to tropical Scorpio — today falling roughly from mid-November to mid-December, varying by the ayanamsa (calculation method) used. Classical texts such as the Brihat Parashara Hora Shastra describe Vrishchika natives as intense, courageous, and investigative, with a tendency toward jealousy — a characterization broadly convergent with the Western reading, despite the two systems developing independently.
This section presents one tradition's interpretation, not a verifiable fact.
Frequently asked questions
- Is Scorpio ruled by Mars or Pluto?
- Traditionally by Mars — a rulership established in classical astrology and still used today in Vedic astrology. From the 20th century onward, following Pluto's discovery in 1930, part of modern Western astrology also began assigning Pluto as a co-ruler of the sign, but this is a recent addition, not part of the classical seven-planet system.
- Did Scorpio's scorpion symbol always exist?
- Yes, unusually among the signs: already in the earliest Babylonian astronomy (MUL.APIN, around the 7th century BCE) this sky sector was called GIR.TAB, 'the Scorpion.' It is one of the most stable zodiac identities, essentially unchanged since then.
- Are Scorpio and Vrishchika (Vedic) the same sign?
- They correspond to the same position in the sequence (eighth sign, ruled by Mars), but occupy different date windows, because the Vedic zodiac is sidereal (aligned to the constellations) while the Western zodiac is tropical (aligned to the seasons) — the gap today is roughly 24 degrees.
Sources
- Nicholas Campion. A History of Western Astrology (2009).
- Claudius Ptolemy. Tetrabiblos (c. 150).
- Maharishi Parashara (trans. R. Santhanam). Brihat Parashara Hora Shastra (1984).
- David Pingree. From Astral Omens to Astrology: From Babylon to Bīkāner (1997).