Courses

Create Your First Chart with the Chart Tool

Enter your birth date, time, and place in astro.how to create your first natal chart, then identify its zodiac wheel, houses, Ascendant, and exact degrees.

A Quick Tour of the Twelve Signs: Recognizing Their Energy Styles

Use the four elements and three modalities to understand all twelve zodiac signs and recognize how each planet expresses itself in your natal chart.

Meet the Personal Planets: Sun, Moon, Mercury, Venus, and Mars

Meet the five personal planets closest to everyday life and learn to read your chart as how you shine, feel, think, love, and take action in the world.

Houses, Ascendant, and Midheaven: The Chart's Life Stages

Explore the twelve houses as life's stages, recognize the Ascendant and Midheaven, and learn where each planet's energy plays out in a natal chart.

Aspects for Beginners: Five Conversations Between Planets

Meet conjunctions, sextiles, squares, trines, and oppositions. Find aspect lines, understand orbs, and read planets through all four chart layers.

How to Ask AI Meaningful Astrological Questions

Turn vague astrology questions into specific, answerable prompts grounded in your chart, with context that helps AI connect symbols to real experience.

Better Questions, Better Answers: A Questioning Framework

Build deeper chart conversations with a repeatable AI questioning framework: locate, explore, integrate, and synthesize configurations into useful insight.

Evaluate AI Answers, Cross-Check Claims, and Respect Ethical Boundaries

Learn to spot invented chart details, overconfidence, and flattery in AI astrology answers, cross-check claims, and respect medical and ethical boundaries.

Earth's Rotation and Diurnal Motion: Why the Rising Sign Keeps Changing

Discover how Earth's rotation makes the sky rise and set, why stars circle the celestial poles, and why the rising sign changes about every two hours.

Earth's Orbit, the Ecliptic, and the Sun's Annual Motion: Where Sun Signs Come From

Explore how Earth's orbit creates the Sun's annual path, why the Sun changes signs about once a month, and how the ecliptic's tilt produces the seasons.

Zodiac Signs and Ecliptic Longitude: Reading Every Coordinate in a Chart

Learn what Venus at 15° Taurus means, convert sign degrees to 0–360° ecliptic longitude, and understand the different origins of tropical and sidereal zodiacs.

Solar, Lunar, and Planetary Speeds: Why the Moon Describes Moods and Pluto Generations

Compare how fast the Sun, Moon, and planets move through the zodiac, and learn why their speeds distinguish personal, social, and generational themes.

Planetary Retrograde: Apparent Motion from Orbital Overtaking

Use interactive orbital models to see why Mars, Mercury, and other planets appear to move backward, and compare retrograde frequency, duration, and extent.

The Moon's Orbit, Phases, and Synodic Cycle: The Sky's Fastest Light

Understand how Sun–Earth–Moon geometry creates lunar phases, why synodic and sidereal months differ, and how the Sun–Moon angle defines your birth phase.

The Horizon, Ascendant, and Descendant: Anchoring a Chart to Birth Time and Place

Learn how the horizon defines the Ascendant and Descendant, why the rising sign changes so quickly, and how the ASC–DSC axis connects self and others.

The Midheaven, IC, and Meridian: Where the Chart's Vertical Axis Comes From

Distinguish the Midheaven from the zenith, locate the IC, and see how the meridian defines a chart's vertical axis and its links to career and roots.

Coordinates, Time Zones, and Birthplace: Putting Birth Data on One Scale

Learn why birthplace matters for a natal chart, how latitude, longitude, and UTC work, and how daylight saving and historical time zones affect accuracy.

Ephemerides and Natal Chart Structure: Assembling the Astronomical Pieces

Discover how an ephemeris records planetary positions, then combine time, place, zodiac coordinates, angles, houses, and aspects into a complete natal chart.

Precession and the Tropical and Sidereal Zodiacs: Where Does 0° Aries Begin?

Learn how Earth's slow axial wobble shifts the equinox, why tropical and sidereal zodiacs differ by about 24°, and what claims about changed signs mean.

House Systems: Why Whole Sign, Equal, and Quadrant Houses Change Placements

Compare whole sign, equal, and Placidus houses, learn why the same planet can change houses between tools, and explore what happens at high latitudes.

The Twelve Signs: Energy Archetypes from Aries to Pisces

Understand the twelve zodiac signs through elements, modalities, and polarities, and learn to derive each sign's style without memorizing personality labels.

Sun Signs: How Your Core Self Shines

Discover what your Sun sign reveals about identity, life direction, and vitality, and why its sign and house matter within the wider picture of your chart.

Moon Signs: What You Truly Need in Private

Understand your Moon sign's emotional instincts, need for security, and nurturing patterns, and explore why the Moon matters in lasting close relationships.

Personal Planets: How You Think, Love, and Act

Read Mercury, Venus, and Mars in your natal chart to understand thinking, affection, values, and action, and connect their signs and houses to everyday life.

Social Planets: Jupiter and Saturn, Expansion and Restraint

Explore Jupiter's growth and opportunity alongside Saturn's responsibility and boundaries, and learn how their balance connects personal life with society.

Outer Planets: Uranus, Neptune, Pluto, and Generational Themes

Meet Uranus, Neptune, and Pluto, distinguish generational themes from personal ones, and see how houses, aspects, and angles make outer planets individual.

The Twelve Houses: Twelve Settings for Life

Explore the twelve houses, angular, succedent, and cadent groupings, and why Placidus and whole sign systems can place a planet in different life areas.

Four Angles: Ascendant, Midheaven, Descendant, and IC

Understand the four angles of a natal chart, their life themes, and how precise birth time and place establish the framework for self, relationships, and home.

Rising Signs: Twelve Ways of Entering the World

Explore the twelve rising signs, their first impressions and ruling planets, and learn why an accurate birth time matters when interpreting your Ascendant.

Two Polarities: Outward and Inward Zodiac Energy

Learn the masculine and feminine polarities of the zodiac, how they connect to the four elements, and how to read inward and outward balance across a chart.

Three Modalities: Cardinal, Fixed, and Mutable Rhythms

Learn how cardinal, fixed, and mutable signs initiate, sustain, and adapt, then read their proportions in a natal chart to understand patterns of action.

The Four Elements: Fire, Earth, Air, and Water

Explore fire, earth, air, and water in astrology, then use the balance of elements across a chart to understand temperament, strengths, and areas for practice.

Aspects: Conversations Between Planets

Learn five major aspects, their angles and orbs, and how conjunctions, oppositions, trines, squares, and sextiles describe planetary interaction.

Planet × Sign × House × Aspect: Combining a Chart's Layers

Combine planets, signs, houses, and aspects into clear interpretations, recognize inner tensions, and identify the themes that give a natal chart coherence.

Chart Reading Steps: A Systematic Workflow from Start to Finish

Follow five practical steps for reading a natal chart, from elemental balance and the Big Three to tight aspects, repeating themes, and a coherent core story.

Synastry Aspects and Orbs: Which Cross-Chart Contacts Count

Understand the five major synastry aspects, choose tighter orbs, and prioritize meaningful cross-chart contacts without getting lost in chart lines.

Sun, Moon, and Ascendant: Core Identity and Emotional Connections

Explore Sun–Moon, Moon–Moon, and Ascendant contacts in synastry to distinguish early attraction from the emotional understanding that supports daily life.

Mercury Aspects: Communication and Understanding in Synastry

Read Mercury–Mercury and Mercury–personal planet aspects in synastry to understand easy conversation, emotional misunderstandings, and everyday connection.

Venus and Mars Aspects: Love, Attraction, and Intimate Chemistry

Explore Venus–Mars cross-aspects, mutual attraction, and two-way contacts in synastry, while distinguishing powerful chemistry from lasting compatibility.

Jupiter and Saturn Aspects: Growth, Commitment, and Limits

Learn how Jupiter encourages growth and Saturn brings commitment and tests in synastry, and how balancing both supports a stable, lasting relationship.

Outer-Planet Aspects: Deep Transformation, Generations, and Profound Attraction

Read Uranus, Neptune, and Pluto contacts in synastry, distinguish personal connections from generational background, and avoid romanticizing unhealthy bonds.

Planets in the Other Person's Houses: Your Role in Their Life

Learn house overlays in synastry: place one person's planets in the other's houses to understand relationship roles and the life areas they activate.

Angles, Lunar Nodes, and Fate: Where a Destined Feeling Comes From

Explore how planets contacting angles and lunar nodes can create a sense of fate in synastry, while keeping growth, awareness, and personal choice central.

Two-Way Aspects and Relationship Themes: Synastry vs. Composite Charts

Understand two-way aspects, distinguish synastry from composite charts, and combine aspects, house overlays, and angles into a clear relationship theme.

Romance, Parenting, Friendship, and Work: One Toolkit, Different Priorities

Adapt synastry to romance, parent–child bonds, friendships, and work by choosing the planets, houses, and questions that suit each relationship.

Practical Synastry Reading and Ethics: Interpreting Responsibly

Bring synastry techniques into a five-step reading process and learn ethical boundaries that protect choice, privacy, and healthy relationship decisions.

Transit Aspects: Applying and Separating

Learn how transit aspects form, distinguish applying from separating, and understand why themes may build before exactness or repeat through retrogrades.

Transit Orbs and Event Time Windows

Learn astro.how's transit orb settings, estimate time windows from planetary speed, and use an ephemeris to mark entry, exact hits, and final exit.

Fast-Planet Transits: Everyday Triggers and Short-Term Rhythms

Use Moon, Sun, Mercury, Venus, and Mars transits to understand everyday rhythms, while separating short-term triggers from lasting planetary themes.

Jupiter Transits: Expansion, Opportunity, and Belief

Explore Jupiter's 11.86-year cycle and how its transits amplify options, confidence, and beliefs, while distinguishing opportunity from overexpansion.

Saturn Transits: Responsibility, Limits, and Maturity

Understand Saturn's 29.5-year cycle, house transits, retrograde contacts, and returns, using responsibility and structure as a practical reading framework.

Uranus Transits: Change and Breakthrough

Explore Uranus's 84-year cycle and midlife turning points, distinguishing freedom and renewal from real losses, unexpected events, and uncontrollable factors.

Neptune Transits: Ideals, Uncertainty, and Dissolution

Explore Neptune's 165-year cycle and themes of ideals, boundaries, and uncertainty, using fact-checking, trusted support, and review dates to stay grounded.

Pluto Transits: Power, Crisis, and Transformation

Understand Pluto's long cycle and explore power, attachment, loss of control, and restructuring through close aspects, natal points, houses, and real evidence.

Transits Through the Twelve Houses and Four Angles

Read transiting planets through houses, separate sign speed from house duration, compare house systems, and interpret conjunctions to the four angles carefully.

Combining Multiple Transits and Long and Short Cycles

Use a three-layer filter and four weighting factors to combine multiple transits, treating thematic resonance as a working model for prioritizing attention.

Transit Timelines and Case Practice

Build a repeatable transit timeline with two fictional teaching cases, recording dates, degrees, house systems, orbs, time windows, and practical limits.

Return, Transit, and Natal Charts: Which Chart for Which Question?

Distinguish natal structure, solar return themes, and transit timing. Learn how to choose the right chart and combine three time scales responsibly.

Solar Return: A Chart for This Year of Your Life

Start with the return Ascendant, read the Sun and planets in return houses, check planets near the angles, and learn how to overlay the natal chart.

Solar Return Ascendant, Houses, and Annual Themes: Setting This Year's Stage

The return Ascendant sets the year's approach; the return Sun and planets in return houses show its stage. Read the houses, stelliums, and angles.

Solar Return Aspects and Natal Overlays: Advanced Bi-Wheel Techniques

Read aspects within the return chart first, then overlay it on the natal chart to study cross-aspects, choose useful orbs, and prioritize contacts.

Solar Return Case Studies: From Chart Calculation to an Annual Story

Read two solar return cases with a five-step method, from the return Ascendant and houses to chart aspects, transit timing, and natal overlays.

Lunar Returns

Learn how the 27.3-day lunar return works, which chart positions stay fixed, and how to read each cycle's emotional stage within the year's solar return theme.

Lunar Returns and Your Monthly Emotional Cycle

Learn how lunar return phases follow the calendar and each cycle repeats an inner rhythm. Keep testable notes and connect monthly observations to yearly themes.

Mercury and Venus Returns

Mercury and Venus usually return about once a year, but retrograde loops can create three returns or stretch the interval. Learn how to read each chart.

Mars Returns

Mars returns to its natal degree about every 687 days, marking an action cycle of roughly two years. Learn to read the chart and understand retrograde delays.

Jupiter Returns

Jupiter returns about every twelve years. Learn why a cycle can have one or three exact passes, common life-stage themes, and how to read its chart.

Saturn Returns

Saturn returns to its natal longitude about every 29.5 years, usually two or three times in a lifetime. Learn to read its timing, retrograde passes, and chart.

Integrating Multiple Return Cycles

Map lunar, solar, Mercury, Venus, Mars, Jupiter, and Saturn returns on one timeline. Use long cycles for context and short cycles for timing.