Earth Science - The Ancient Roots of Astronomy

Explore the historical foundations of astronomy in this 30-minute lecture from Spahn's Science Lectures. Delve into the definition and branches of astronomy before embarking on a journey through ancient astronomical practices. Examine the contributions of Ancient Greek astronomers, including their geocentric model of the universe and Ptolemy's explanations for retrograde motion. Follow the evolution of astronomical thought through a comprehensive timeline, leading to the revolutionary ideas of modern astronomy. Learn about Copernicus and his heliocentric model, Tycho Brahe's meticulous naked-eye observations, and the concept of stellar parallax. Gain insights into the publication of groundbreaking astronomical works and their impact on scientific understanding. Conclude with a deeper appreciation for the ancient roots that shaped our current comprehension of the cosmos.

Introduction
What is Astronomy
Branches of Astronomy
Ancient Astronomy
Ancient Greece
Geocentric Model
Ptolemy
Retrograde Motion
Ancient Astronomy Timeline
Modern Astronomy
Copernicus
Publication
Tycho Brahe
Stellar Parallax
Naked Eye Observations
Questions
Nicholas Copernicus
Aerith Anis
Conclusion