Astrology 101
What Astrology Is
Astrology is the study of how the positions of the Sun, Moon, and planets at a specific moment in time — most often at a person’s birth — can be used to describe patterns in personality, behavior, and life experience. A birth chart is essentially a map of the sky the moment you were born, showing where the planets were in relation to Earth.
Astrology does not say that planets physically control us. Instead, it treats celestial movements as a symbolic system — a way to track cycles and interpret how they might reflect human life.
Where Astrology Came From
For as long as people have looked up, they’ve seen the sky as a guide:
Ancient beginnings (2000–500 BCE): The earliest evidence of astrology dates back over 4,000 years to Mesopotamia (modern‑day Iraq). Priests studied the heavens, linking planetary movements with events on Earth — weather, politics, and natural phenomena.
Egypt & Greece (500 BCE–200 CE): Astrology spread through Egypt and later Greece. The Greeks developed much of the language we still use today — for example, they organized the zodiac into 12 equal signs.
Rome & the Middle Ages (200–1400 CE): Astrology was widely practiced in Rome, blended with medicine and philosophy in the Middle Ages, and was studied in universities alongside astronomy.
Renaissance to modern times (1400 CE–present): During the Renaissance, astrology was part of mainstream scholarship. Later, as astronomy became a strictly scientific field, astrology separated and remained a cultural and symbolic practice rather than a hard science.
“We are born at a given moment, in a given place, and like vintage years of wine, we have the qualities of the season of our birth.”
🌍 Different Types of Astrology
Astrology isn’t the same everywhere. Over time, different cultures created their own systems for connecting the sky with human life. While they share the same idea — that the heavens reflect patterns on Earth — the methods are very different. Here are the main types:
Western Astrology (Helio’s Focus)
- What it is: The system most people in Europe and the Americas know. It uses the tropical zodiac (season-based), dividing the sky into 12 signs (Aries → Pisces).
- How it works: The zodiac begins each year at the spring equinox (equal day and night), marking the start of Aries. The other 11 signs follow in equal 30° sections.
- What it emphasizes: Personality, psychology, and how different parts of life connect. Commonly used for birth charts, horoscopes, and self-understanding.
- 👉 Think: season-based and personality-focused.
Vedic Astrology (India)
- What it is: A system from India, practiced for thousands of years. It uses the sidereal zodiac, aligning more closely with actual constellations.
- How it works: Unlike the tropical zodiac, the sidereal zodiac shifts slowly over time (the precession of the equinoxes). Your sign in Vedic astrology may differ from your Western one.
- What it emphasizes: Life path, karma, and destiny — often focusing on major life events (career, marriage, spiritual development).
- 👉 Think: constellation-based and life-path-focused.
Chinese Astrology
- What it is: A different system built around a 12-year cycle. Each year links to an animal (Rat, Ox, Tiger, Rabbit, etc.) and one of five elements (Wood, Fire, Earth, Metal, Water).
- How it works: Your sign depends on your birth year, not month. For example, someone born in 1996 is a Fire Rat; 1997 is an Ox.
- What it emphasizes: Relationships, compatibility, and cycles of fortune — often used to choose lucky dates for weddings, business openings, and other events.
- 👉 Think: year-based and cycle-focused.
Helio focuses on Western astrology, since it’s the most familiar and beginner-friendly for people in Europe and the Americas.
🔭 How Astrology Works in Practice
Astrology takes the exact time, date, and place of your birth and creates a map of the sky in that moment. That map becomes your birth chart. An astrologer then reads the chart by combining four building blocks:
1. Planets — What’s Acting
- Each planet represents a part of you or a basic drive in life.
- The Sun shows your core identity and purpose.
- The Moon shows your emotions and inner needs.
- Mercury shows how you think and communicate.
- And so on for the other planets.
- 👉 Think of planets as the characters in your personal story.
2. Signs — How It Acts
- Each planet sits in one of the 12 zodiac signs. The sign describes how that planet expresses itself.
- A Sun in Leo acts boldly and creatively.
- A Sun in Virgo acts carefully and thoughtfully.
- 👉 Signs add the style and flavor to the planets.
3. Houses — Where It Shows Up
- The birth chart is divided into 12 houses, each tied to a part of life — career, relationships, home, health, and more. The house a planet falls into shows where its influence plays out.
- Venus (love and values) in the 7th house highlights partnerships.
- Mars (drive and action) in the 10th house highlights career and ambition.
- 👉 Houses point to the life area where the action happens.
4. Planetary Aspects — How They Interact
- Aspects are the angles that planets form with each other in the sky. When two planets connect at a certain angle, it shows how those parts of your personality interact. Some angles show cooperation, some show tension, and others show intensity.
- A trine (120°) shows harmony and ease.
- A square (90°) shows tension and growth through challenge.
- A conjunction (0°) shows fusion and intensity.
- 👉 In short, aspects are the relationships between planets. They explain whether different parts of you work smoothly, challenge each other, or combine into something bigger.
Putting It All Together — The Blueprint
Astrology isn’t about looking at one piece in isolation. Your Sun sign tells part of the story, but when you combine the planets (what), the signs (how), the houses (where), and the aspects (how they interact), you get something unique: a blueprint of you.
Your birth chart doesn’t predict every event — instead, it highlights the patterns you live with, the drives that motivate you, and the themes that keep showing up in your life. It’s like seeing the outline of your personal story.
Why This Matters
This is why not everyone with the same “sign” feels alike. Two people can both be a Leo, but one may come across as bold and playful, while another feels more private or careful. The difference comes from their other placements, which add more layers of meaning.
For beginners, it helps to start simple. The best entry point is the Big Three — your Sun, Moon, and Rising signs. These three placements are the foundation of your personal astrology:
🌞 Sun → your core identity and purpose
🌙 Moon → your emotional world and inner needs
⬆️ Rising → the way you approach life and the impression you give
👉 Once you understand your Big Three, you’ll have the foundation to explore everything else with confidence.

Key takeaways
- Astrology is a symbolic system linking sky patterns with human experience.
- It began 4,000 years ago in Mesopotamia and evolved through many cultures.
- Different traditions exist (Western, Vedic, Chinese, etc.), each with its own approach.
- Helio uses Western astrology, based on the tropical zodiac.
- A birth chart is built from planets (what), signs (how), houses (where), and aspects (how they interact).
- Astrology today is mostly used for self-understanding, not fortune telling.
Ready to keep going?
Next: Your Big Three — Sun, Moon, Rising
Discover your core identity (Sun), your emotional world (Moon), and how you meet the world (Rising). This foundation makes the rest of your chart click.
5–7 min read