Which figure is associated with the father of systematic astronomy and mathematical mapping?

• A. Galileo
• B. Hipparchus
• C. Copernicus
• D. Ptolemy

Answer: (B)

Hipparchus is known for turning astronomy into a disciplined, quantitative science. He carried out systematic, long-term observations and built a star catalog, organizing celestial positions in a consistent way. He also introduced early mathematical methods to map the sky, using trigonometry to calculate angles and distances between stars and along the celestial sphere. His work laid the groundwork for how we measure and represent the heavens with numbers, not just descriptions of what appears in the sky. He even developed the magnitude scale to compare star brightness, showing a clear move toward quantitative mapping of celestial phenomena. In contrast, Galileo is celebrated for telescopic observations, Copernicus for proposing a heliocentric model, and Ptolemy for the geocentric system with epicycles. The combination of systematic methods and the first real use of mathematics to map the sky makes Hipparchus the figure associated with this idea.