For more than a thousand years, the Ptolemaic model was accepted as the correct understanding of the known universe. The foremost principle of this theory was that the Earth was the stationary center of the universe. In this geocentric system, the Sun, Moon, stars, and planets circled the Earth. Ptolemy drew on many previous theories when he outlined these principles in his Almagest in 150 C.E. In 1543, however, the geocentric system met its first serious challenge with the publication of Copernicus's On the Revolutions of the Celestial Spheres. In this work, Copernicus introduced the theory that the Earth and the other planets instead revolved around the Sun. This model is called the heliocentric system. Copernicus began a revolution in astronomy when he argued that it was the Sun and not the Earth that was at the center of the universe. Displacing the Earth as the fixed center posed problems for both natural philosophy and scripture. Galileo Galilei would later defend these radical ideas to the Catholic Church. The ideas of Copernicus are regarded as the starting point of modern astronomy and the beginning of the Scientific Revolution.

Question

8
In the passage, the work of Copernicus is contrasted with the work of
A.
the universe.
B.
On the Revolutions of the Celestial Spheres.
C.
the Almagest.
D.
Galileo Galilei.

Answer 1

In the passage, the work of Copernicus is contrasted with the work of C. the Almagest.