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TL;DR: Western astrology is not considered a science because its predictions are vague, there is no evidence that planets influence human personality or destiny, and it cannot be tested like astronomy. Yet it remains popular because it meets the need for self-explanation and meaningful narratives. The reasonable way to use it is as a reference trend for self-reflection, not as a definitive prediction.
What Is Western Astrology and How Does It Differ from Astronomy?
Western astrology is a belief system claiming that the positions of planets and stars at a person's birth influence their personality, career, love life, and what happens to them. Astrologers make predictions based on planetary positions at the time of birth.
Astronomy also looks at the sky, but it predicts phenomena such as planetary motion and the expansion of galaxies. Astronomers explain their predictions using properties like mass, distance, and gravity.
The only common ground is observing the sky. But while astronomy uses physics and mathematics for verification, astrology stops at making seemingly scientific claims without a clear testing mechanism.
Comparison table of Western astrology and astronomy according to the attributes in the article.
| Criteria | Western astrology | Astronomy |
|---|---|---|
| Object of prediction | Personality, work, love and things that happen to people | Movement of planets and expansion of galaxies |
| Basis for making predictions | Position of the planets at the time a person is born | Mass, distance and gravity |
| Method of verification | No clear verification mechanism | Use physics and mathematics to verify |
| Ability to self-correct | No self-correction mechanism based on evidence | Frequently revise theories to meet increasingly accurate measurements |
| Common point | Both observe the sky | Both observe the sky |
| Example of progress | None | Einstein's general relativity supersedes Newton's general relativity |
Why is astrology not considered a science?
According to Associate Professor of Anthropology Talia Dan-Cohen and Professor of Philosophy Carl Craver (Washington University in St. Louis, USA), we must separate two questions: Is astrology a science? And is it true or false?
Science involves making predictions and testing them against reality. Astrologers also make claims about the "world of stars," but the problem is that testing their predictions about human life turns out to be mere guesswork.
There is currently no evidence that galaxies can influence human life. All scientific claims of astrology about the "world of stars" are false. The scientific basis for astrological statements is entirely vague. Over centuries, astrology has remained at the level of making predictions.
Meanwhile, astronomical theories have continuously evolved with technological advances. Astronomical predictions and theories are regularly revised to match increasingly precise measurements. For example, Einstein's general relativity surpassed Newton's because it accurately predicted the perihelion precession of Mercury.
The core difference: astronomy can be wrong and correct itself, while astrology has no self-correcting mechanism based on evidence.
How did astrology and astronomy overlap in history?
For a very long time, until the 17th and 18th centuries, astronomy and astrology were practiced side by side. Knowing planetary positions relative to stars was necessary to predict how they influenced human affairs.
Even famous astronomers Galileo and Kepler practiced astrology. They wanted to know how things worked to predict future events. This shows astrology was once part of the effort to understand nature, before modern science separated and developed its own verification methods.
However, the fact that great astronomers practiced astrology does not make astrology a science. It only shows the boundary between the two fields was once blurred.
Why is astrology still so popular?
Nearly 30% of Americans believe in astrology. It is one of many tools we use to tell stories about ourselves to understand who we are. We seek stories to explain: Why are we like this? Why do confusing experiences seem to happen to us?
In this sense, astrology's success lies in hitting the psychology of people who are confused. In some cases, astrology is a useful hint for self-reflection. Perhaps astrology is useful in these cases. The stars are merely images illustrating predictions.
This explains why astrology persists alongside modern science: it does not compete in objective prediction but in personal meaning and emotion.
Personality Prediction or Just a Reference Trend?
Astrological theories claim planetary positions influence personality, career, and love. But as analyzed, no scientific evidence confirms this link. Therefore, astrology should not be seen as an accurate personality prediction tool.
However, practically, astrology can serve as a reference trend. It provides language and images for self-reflection: how one tends to act, how one reacts to difficulties, what one wants in relationships. These questions have intrinsic value, regardless of whether answers come from astrology or life experience.
The danger is turning a reference trend into absolute statements. For example, believing "my zodiac sign determines I cannot succeed in this field" can become a psychological barrier. Conversely, using astrology as a hint to ask yourself questions can be helpful.
How do you use astrology wisely?
- Treat astrology as a self-reflection tool, not a verdict on the future.
- Do not use astrology to decide important matters like health, finance, or marriage without other bases.
- Distinguish between general personality descriptions and specific event predictions: astrology is strong at suggestion, weak at accurate forecasting.
- Learn about astronomy for a scientific foundation about the sky, avoiding confusion between the two fields.
