Opening the four pillars…
Today · Thursday, June 4, 2026NASA JPL DE440S · Placidus · 100k cities
Start with the four pillars.
A free, no-signup primer on how a birth chart is built — and where to go next once the vocabulary clicks.
The four pillars
Master these four and a birth chart stops being arcane and starts being readable.
P1
Planets
Ten symbols that map the moving parts of you — drive, mood, voice, love, ambition, the unconscious.
Read planets →P2Signs
The twelve zodiac signs — Aries to Pisces — each a flavor a planet wears when it passes through.
Read signs →P3Houses
Twelve life arenas — body, money, family, partners, career — placed around the chart wheel.
Read houses →P4Aspects
Geometric conversations between planets — sextile, square, trine, opposition, conjunction.
Read aspects →Resources
Where to read, search and watch.
Glossary
Astrology glossary
Every term — Ascendant, Mutable Cross, Sextile, Yod — defined in one place, searchable.
Open the glossary →BlogEditorial blog
Long-reads on transits, rulerships, ephemeris history, chart-reading craft.
Browse the blog →Famous chartsDatabank · famous charts
100+ public birth charts of artists, scientists and leaders — read a chart you already know.
Browse charts →Start here
Three lightweight moves to start practicing today.
01
Make a free chart
Type a birth date, time and place — the chart calculates in under a second.
Build a chart →02See today’s sky
A live snapshot of every planet right now — where they are, what they’re doing.
Today’s sky →03Daily tarot draw
A free 78-card draw refreshed each day. A working ritual to anchor practice.
Draw today →More from Astrolog
Keep reading across the rest of the library.
Editorial
Blog · long-form articles
Deep dives on transits, rulerships, chart-reading craft.
Reference
Cosmic glossary · A–Z
Every term — Ascendant, Yod, Mutual Reception — defined plainly.
Data
Astro databank · famous charts
Documented birth data for 30+ public figures.
Daily
Today's horoscope
Daily reading by sign — real transits, no recycled copy.
Live
Today's sky
Where every planet sits in the zodiac right now.