Key Concepts

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Ch. 21: Origin of Modern Astronomy

After reading and studying Ch. 21, you should be able to:

Concept 1: Consider the contributions of ancient civilizations to the development of Astronomy including the geocentric and heliocentric views of the Universe.

Concept 2: List major developments leading to modern astronomy including the work of Nicolaus Copernicus, Tycho Brahe, Johannes Kepler, Galileo Galilei, and Sir Isaac Newton.

Concept 3: Explain the importance of constellations and the equatorial system for locating stars.

Concept 4: Describe the primary motions of Earth and Earth's relationship with respect to the Moon and the Sun.

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