Astronomy vs Astrology — What Is the Difference?

Astronomy is a science; astrology is a belief system. They share roots but diverged centuries ago.

Quick answer

Astronomy is the scientific study of celestial objects and the physical universe. Astrology is a belief system that claims the positions of stars and planets influence human affairs. They are not the same.

Both fields trace back to ancient sky-watching, but they parted ways during the scientific revolution. Astronomy uses observation, mathematics, and physics to understand the universe.

Astrology assigns meaning to planetary positions — for example, claiming your personality is shaped by which zodiac sign the Sun occupied at your birth. This has no empirical support and is not a science.

Cosmic Age Again celebrates the real, measurable mathematics of the solar system. Our calculations are grounded in orbital mechanics and the work of astronomers like Jean Meeus.

Notes

1. J. Meeus, Astronomical Algorithms, 2nd ed. (Willmann-Bell, Richmond, VA, 1998).
2. NASA, "What Is Astronomy?" https://science.nasa.gov/astronomy/ (accessed 2026).

Astronomy vs Astrology — What Is the Difference?

Notes

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