Reference Library

Planets in Signs

A planet says what part of life is being described. The sign says how it behaves there. Learn the two lists and most of a birth chart becomes readable.

Governs

Identity & vitality

Full cycle

1 year

Keyword

purpose

Sun in Aries

You shine fast, first and without asking permission.

Watch for starting more than you finish.

Sun in Taurus

You shine slowly, physically, and with a refusal to be rushed.

Watch for mistaking stubbornness for stability.

Sun in Gemini

You shine in several directions at once, through words and curiosity.

Watch for talking your way around the actual feeling.

Sun in Cancer

You shine protectively, through memory, mood and belonging.

Watch for withdrawing instead of saying what hurt.

Sun in Leo

You shine generously and in full view, needing the warmth returned.

Watch for needing the applause more than the work.

Sun in Virgo

You shine precisely, usefully, and with an eye on what still needs mending.

Watch for correcting people who did not ask.

Sun in Libra

You shine relationally, weighing the other person before yourself.

Watch for agreeing to keep the peace, then resenting it.

Sun in Scorpio

You shine totally or not at all, with nothing kept on the surface.

Watch for controlling the thing you are afraid to lose.

Sun in Sagittarius

You shine expansively, chasing meaning and hating a closed door.

Watch for leaving before it can get complicated.

Sun in Capricorn

You shine strategically, for a result that will still stand in ten years.

Watch for measuring your worth by output.

Sun in Aquarius

You shine unconventionally, from a slight distance, on principle.

Watch for detaching when warmth is what is required.

Sun in Pisces

You shine porously, intuitively, blurring where you end and others begin.

Watch for dissolving into whatever is loudest around you.

In short

Every planet in every sign: 120 short readings covering Sun through Pluto, what each planet governs, its cycle length, and the shadow of each placement.

  • Mercury is never more than one sign away from the Sun, and Venus never more than two — a useful check on any chart.
  • If an outer planet sits on a personal point in your chart, the generational placement becomes personal after all.
  • Rulership matters: Mars in Aries or Venus in Taurus behaves more purely than the same planet in a sign it dislikes.
  • Read the shadow of a placement you dislike in someone else — it is often the placement you share.

10

Planets covered

12

Signs each

120

Readings here

2nd c.

Ptolemy's Tetrabiblos

The planet-and-sign grid is the oldest working grammar in Western astrology. Babylonian omen texts already paired the visible wanderers with regions of the sky, and by the Hellenistic period the system was formalised: seven planets, twelve signs, a fixed table of rulerships, exaltations and falls.

Ptolemy's Tetrabiblos in the second century set out the reasoning that survived for fourteen hundred years — planets as active agents, signs as the conditions those agents operate in. The metaphor most readers still use, planet as verb and sign as adverb, is a direct descendant.

Uranus, Neptune and Pluto were added after 1781, 1846 and 1930 respectively, and their meanings were assigned partly by the historical mood at the moment of discovery: revolution, romanticism and depth psychology. Whatever one makes of that, it is why the outer planets read as generational rather than personal — they move so slowly that everyone born within several years shares the placement.

Questions Readers Ask

How do I find my planets?

Run the birth chart calculator — it lists all ten with sign, degree, house and retrograde status.

Why do my friends share my Pluto sign?

Pluto takes 248 years to orbit and spends a decade or two per sign, so everyone your age shares it.

What is the difference between sign and house?

Sign is how a planet behaves; house is which part of life it behaves in.

Which placement should I read first?

Sun, Moon and rising, then Venus and Mars — those five cover most of what people come looking for.