Astrology vs Cosmology

Astrology and cosmology are two fields that study the heavens, but have fundamentally different purposes and methodologies. In the modern era, cosmology has become associated with the scientific study of the origin and structure of the universe, while astrology is often considered a pseudoscience by the scientific community.

However, astrology has an ancient lineage and continues to have cultural significance for many people today. In this blog post, we will explore the key distinctions between these two fields and why they represent different ways of understanding our place in the cosmos.

Defining Astrology

A Symbolic Interpretive Practice

Astrology is a symbolic and interpretive practice that dates back thousands of years to ancient Mesopotamia, Egypt, India, China, and Mayan and Aztec civilizations. The core belief in astrology is that the relative positions and movements of celestial bodies such as the Sun, Moon, planets, and stars exert influence over human affairs and terrestrial events. Early astrologers correlated the cycles of celestial bodies with seasons, weather, and agricultural patterns.

Over time, astrologers developed complex systems of meaning based on zodiac signs, astrological aspects between planets, and the placement of planets in astrological houses. This symbolic language was used to interpret what the heavens were conveying about an individual’s personality, relationships, opportunities, and misfortunes. Astrology aims to provide guidance about one’s life path and insight into the cosmic order.

Subjective Interpretive Practice

Importantly, astrology is not an objective scientific practice, but rather a subjective symbolic art. The interpretations are based on ancient astrological traditions, symbolism, and metaphor rather than on empirically verifiable evidence.

Two people could look at the same birth chart and provide very different astrological analyses. Astrologers must rely on their intuitive faculties, life experience, and symbolic imagination to interpret the significations of the planets. There are no consistent predictable outcomes from astrological interpretation.

Defining Cosmology

The Scientific Study of the Universe

In contrast to astrology, cosmology is a branch of astronomy and physics that deals with understanding the origin, large-scale structures, evolution, and ultimate fate of the entire physical universe. Some of the big questions cosmologists investigate include:

  • How did the universe begin and evolve?
  • What is it made of?
  • What is its geometry and dimensionality?
  • What physical laws govern it?

Unlike astrology, cosmology relies on the scientific method – objective observations, hypothesis testing, quantitative measurements, and mathematical models. Astronomical instruments like telescopes allow scientists to peer deeper into space and further back in time. Space missions and detectors provide data to test theories. Cosmology has progressed rapidly with advancements in technology and physics.

Evidence-Based Understanding

While there are still active areas of research and unknowns about the cosmos, cosmology provides an evidence-based understanding of the physical universe. Theories must align with empirical data and be testable and falsifiable. Cosmology seeks to find verifiable universal laws and truths about the structure and behavior of the cosmos, not provide individualized symbolic interpretations.

The Cultural Significance of Astrology

While astrology is no longer aligned with science, it continues to have cultural relevance for many people today. Surveys show between 25-30% of Americans believe in astrology. Here are some reasons astrology persists as a symbolic practice:

  • Provides meaning, guidance and reassurance about life’s challenges
  • Satisfies desire to feel connected to the cosmos
  • Ancient tradition interwoven into culture
  • Entertaining hobby for some people
  • Personal validation from subjectively accurate horoscope readings

The exact mechanisms by which astrology is said to exert influence are not scientifically verified. However, on a cultural level, astrology meets psychological and spiritual needs. It reveals our deeply held desire to feel that the universe is orderly and that our lives are meaningful within the grand scheme.


Astrology and cosmology represent two very different approaches for understanding our place in the cosmos – one mystical, symbolic and individual, the other scientific, evidence-based and universal. While astrology does not provide empirically verifiable cosmic truths, its continued cultural relevance reminds us of the human need for meaning, connection and guidance. With further advances, cosmology may someday reveal more about the deepest mysteries of our universe.


Tarnas, Richard (2006). Cosmos and Psyche. Penguin Group USA.

Tester, S.J. (1987). A History of Western Astrology. Ballantine Books.

NASA Science – Cosmology:

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