Astrology interprets the positions of planets, signs, houses, and aspects in a birth chart. Cosmic Copilot uses deterministic VSOP87 calculations and IANA timezone data. Supported planetary outputs are compared with astro.com reference values in automated tests using a 0.5° tolerance; this is a test threshold, not a universal accuracy guarantee.
Astrology is the ancient study of how celestial bodies influence human life. Your birth chart captures the exact positions of the Sun, Moon, and planets at the moment you were born—creating a unique cosmic blueprint of your personality, strengths, and life path.
12
Zodiac Signs
10
Planets
12
Houses
5+
Major Aspects
At the exact moment you were born, the planets occupied specific positions in the sky. This snapshot becomes your natal chart—unique to your birth date, time, and location.
Each planet represents different aspects of life: the Sun is your identity, the Moon your emotions, Mercury your communication, Venus your love life, Mars your drive, and so on.
The zodiac sign a planet is in shows HOW that energy expresses. The house shows WHERE in life it plays out. Aspects (angles between planets) show how energies interact.
Your core identity, ego, and life purpose. This is the sign most people know—"I'm a Leo" means your Sun is in Leo.
Your emotional nature, inner self, and instincts. How you feel, what you need for security, and your relationship with your mother.
How others see you, your outward personality, and first impressions. Also called your Ascendant—requires exact birth time.
From Aries to Pisces, each sign has unique traits, elements, and modalities.
Explore signsSun through Pluto, each planet rules different aspects of your life and personality.
Explore planetsLife areas from self-identity to spirituality. Where planets fall shows focus areas.
Explore housesAngles between planets that create harmony or tension in your chart.
Explore aspectsAstrology is the study of how celestial bodies—the Sun, Moon, planets, and stars—influence human life and earthly events. It uses the positions of these bodies at the moment of your birth to create a birth chart (natal chart), which serves as a cosmic blueprint of your personality, strengths, challenges, and life path.
No. Astronomy is the scientific study of celestial objects and phenomena. Astrology is an interpretive system that assigns meaning to planetary positions. Modern astrology uses astronomical calculations (like VSOP87 ephemeris) but interprets them through a symbolic lens for personal insight.
A birth chart (also called a natal chart) is a map of the sky at the exact moment you were born, from the location where you were born. It shows where each planet was positioned in the zodiac and in which "house" (life area). Your chart is unique to you—like a cosmic fingerprint.
The 12 zodiac signs are: Aries, Taurus, Gemini, Cancer, Leo, Virgo, Libra, Scorpio, Sagittarius, Capricorn, Aquarius, and Pisces. Each sign has distinct personality traits, ruled by a planet and associated with an element (Fire, Earth, Air, or Water).
Your Sun sign reflects your core identity and ego. Your Moon sign reveals your emotional nature and inner self. Your Rising sign (Ascendant) shows how you appear to others and your outward personality. Together, these three form your "Big Three" in astrology.
Chart quality depends on complete birth data. Cosmic Copilot uses deterministic VSOP87 calculations and IANA timezone data. Supported planetary outputs are compared with astro.com reference values in automated tests using a 0.5° tolerance; this is a test threshold, not a universal accuracy guarantee.
Go deeper on how signs, houses, aspects, and transits fit together.
Explore How Astrology Works