Month: July 2025

ASTROLABE
An ancient instrument used to measure the positions of celestial objects.

STONEHENGE
A prehistoric monument in England believed to have been used for tracking celestial events.

ZIGGURATS
Structures built by ancient Mesopotamians, often used as astronomical observatories.

ANCIENT ASTRONOMY
The study of celestial objects and events by ancient civilizations, often for religious and agricultural purposes.

ISAAC NEWTON
A physicist who formulated the law of universal gravitation, explaining planetary motion.

GALILEO GALILEI
An Italian astronomer who improved the telescope and made key observations supporting heliocentrism.

JOHANNES KEPLER
A German astronomer who formulated three laws of planetary motion, refining the heliocentric model.

TYCHO BRAHE
A Danish astronomer known for his precise planetary observations, which helped develop Kepler’s laws.

COPERNICAN REVOLUTION
The shift from the geocentric to the heliocentric model, initiated by Nicolaus Copernicus in the 16th century.

PTOLEMAIC SYSTEM
The geocentric model proposed by Claudius Ptolemy, incorporating epicycles to explain planetary motion.