Learn astrology
Plain-English guides to the ideas behind your chart – what is calculated, what is interpreted, and where it all comes from.
What Is a Natal Chart? A Beginner's Guide
A natal chart is a map of the sky at the moment you were born. Planets, signs, houses and aspects explained – plus where the chart comes from and how to read your own.
How to Read Your Birth Chart: A Step-by-Step Guide
A practical, beginner-friendly method for reading a natal chart – where to start, what to look at first, and how the planets, signs, houses and aspects fit into one story.
How AstraBrain Works – From Swiss Ephemeris to AI
AstraBrain computes your chart with the Swiss Ephemeris, then interprets it with AI in three tones. Exactly where the precise numbers end and the interpretation begins.
The Three Tones: Ironic, Psychologist, Business
AstraBrain reads the same natal chart in three tones – ironic, psychologist and business. What each tone is for, when to choose it, and why three voices are more honest than one.
The 12 Houses in Astrology, Explained
The twelve houses show WHERE a planet's energy plays out – identity, money, love, career and more. A clear guide to each house, the angles, house systems and why birth time matters.
Astrological Aspects Explained: Conjunction, Square, Trine
Aspects are the angles between planets – the conversations in your chart. Conjunction, sextile, square, trine, opposition, minor aspects, orbs and patterns, made simple.
The Planets in Astrology: What Each One Means
The ten planets are the "what" of your chart – the core human drives. Sun, Moon, Mercury, Venus, Mars, Jupiter, Saturn, Uranus, Neptune and Pluto, with orbits, rulerships and honest limits.
The Sun in Astrology: Identity, Will, and the Core of Your Chart
The Sun is the core of your chart – identity, vitality, and conscious will. What your Sun sign really means, why it is not your whole chart, and the honest limits.
The Moon in Astrology: Emotions, Instinct, and Your Inner World
The Moon is your emotional core – needs, instinct, memory, what makes you feel safe. What your Moon sign means and why it demands an exact birth time.
The 12 Zodiac Signs: Elements, Modalities and Rulers
The twelve signs are the "how" of your chart – the style each planet expresses in. A clear guide to the four elements, three modalities, polarity, rulers and what makes each sign distinct.
The Ascendant and the Four Angles
The Ascendant (rising sign) and the four angles – Ascendant, Descendant, Midheaven and Imum Coeli – are the backbone of your chart. What they are, what each means, and why birth time sets them.
Lunar Nodes and Black Moon Lilith
The North and South Nodes (Rahu and Ketu) and Black Moon Lilith are sensitive points, not planets. What they are astronomically, the myth behind them, and how astrology reads them.
Retrograde Planets, Explained (Including Mercury)
Retrograde means a planet appears to move backwards from Earth – an optical effect, not a real reversal. What each retrograde means, the truth about Mercury retrograde, and what it means in a birth chart.
Astrological Transits Explained
Transits are where the planets are right now, measured against your birth chart – the engine behind daily and yearly forecasts. What they are, the great life cycles by age, and how to read them.
Synastry: How Astrology Compares Two Charts
Synastry is the astrology of relationships – comparing two natal charts to see how they interact. The contacts that matter, houses, the composite chart, honest limits, and how AstraBrain reads compatibility.
Progressions and Solar Returns
Progressions and solar returns are how astrology tracks personal growth and the year ahead – the "day for a year" method, the progressed Moon, solar arc directions and the birthday chart, explained.
A Short History of Astrology
From Babylonian sky-watchers and Ptolemy to the Islamic Golden Age, William Lilly, Alan Leo and the 1930 newspaper horoscope – an honest history of astrology and its key figures.
Ptolemy and the Tetrabiblos: Astrology's Founding Text
Claudius Ptolemy (c. 100–170 CE) wrote the Tetrabiblos, the text that shaped Western astrology for over a thousand years. Who he was, what the four books contain, and why it still matters.
Johannes Kepler: The Astronomer Who Reformed Astrology
Johannes Kepler (1571–1630) discovered the laws of planetary motion – and worked as an astrologer, trying to put the craft on firmer footing. His life, his aspects, and a portrait of a divided genius.
Al-Biruni: The Polymath Who Documented Astrology
Al-Biruni (973–1048), one of the greatest scholars of the medieval Islamic world, measured the Earth's radius to within about 1% and wrote a rigorous manual of astrology in 1029 – while advancing astronomy, mathematics and geography.
William Lilly and Horary Astrology
William Lilly (1602–1681), England's most famous astrologer, wrote Christian Astrology (1647) and was questioned by Parliament over the Great Fire of London. An introduction to horary astrology.
Carl Jung and Psychological Astrology
Carl Jung (1875–1961) linked astrology to his ideas of archetypes and synchronicity, and ran a statistical astrological experiment with physicist Wolfgang Pauli. How he shaped the modern psychological approach.
Dane Rudhyar and Humanistic Astrology
Dane Rudhyar (1895–1985), a composer and philosopher as well as an astrologer, reframed astrology around personal growth in his 1936 book The Astrology of Personality – founding the humanistic approach that shapes modern readings.
Why Your Birth Time Matters (and Rodden Ratings)
Without an exact birth time the Ascendant and houses are uncertain. Why the minute of birth matters, what a solar chart is, the Rodden rating scale, and how to find or rectify your time.
Western vs Vedic Astrology: Two Systems Compared
Western and Vedic (Jyotish) astrology split on the zodiac and much else – nakshatras, dashas, houses, the planets they use, and why your sign can differ between them.
Hellenistic Astrology: The Ancient Root of Western Charts
Hellenistic astrology, born in Greco-Roman Egypt around the 2nd century BCE, invented the horoscope. Sect, whole-sign houses, the lots, time-lords, and its modern revival.
Chinese Astrology: Animals, Elements and the 60-Year Cycle
Chinese astrology is a wholly different system – twelve animal signs, five elements, yin and yang and a 60-year cycle, built on the lunar calendar and the Four Pillars rather than the planets.
Tropical vs Sidereal Zodiac: Why You Have Two Signs
The tropical zodiac follows the seasons; the sidereal zodiac follows the stars. Precession has pulled them about 24° apart – which is why Western and Vedic astrology can give you different signs.
Is Astrology Real? An Honest Look at the Evidence
Is astrology real? What controlled studies found, why readings feel accurate anyway, which objections miss, and where AstraBrain draws the line.
Why Horoscopes Feel Accurate: The Psychology Explained
Horoscopes feel uncannily accurate for reasons unrelated to the stars: the 1948 experiment, what raises acceptance, and how to test a reading yourself.
The Big Three: Sun, Moon and Rising Sign Explained
Your Sun, Moon and Rising sign, what each one actually measures, why the Ascendant needs your exact birth time, and what to do if you do not know it.
The Saturn Return: What It Is and When Yours Happens
Saturn returns to its birth position near age 29. What the cycle is, why your dates differ, and the same crisis explained without Saturn.
Mercury in Astrology: The Planet of Mind, Speech, and Learning
Mercury rules the mind: how you think, speak, and learn. What your Mercury sign and house mean, the truth about retrograde, and the honest limits of it all.
Venus in Astrology: Love, Beauty, Money, and Value
Venus rules love, beauty, taste, and value. What your Venus sign and house mean, its role in compatibility, the pentagram it draws, and the honest limits.
Mars in Astrology: Drive, Desire, Anger, and Action
Mars rules drive, desire, anger, and action. What Mars means across the signs, its role in attraction, why its retrograde is rarer, and the honest limits.
Jupiter in Astrology: Growth, Luck, Meaning, and Abundance
Jupiter rules growth, luck, meaning, and abundance. What Jupiter means across the signs, the twelve-year cycle and Jupiter return, its balance with Saturn.
Saturn in Astrology: Discipline, Limits, Time, and Maturity
Saturn governs discipline, limits, time and maturity. What Saturn means across the signs, the Saturn return, its balance with Jupiter, and the honest limits.
The Outer Planets: Uranus, Neptune, and Pluto in Astrology
Uranus, Neptune and Pluto are slow, generational planets. What each one means, why house and aspect matter more than sign, their discovery, and the honest limits.