Since ancient times, human beings have been thinking about the structure of the universe. As early as ancient Greece, philosophers put forward the idea that the earth was in motion, but there was no basis at that time, so it was not recognized by people. In ancient Europe, Aristotle and Ptolemy advocated the geocentric theory that the earth was stationary and other stars revolved around the center of the universe. This theory coincides with the statement of heaven, earth and hell in the Christian Bible.
With the continuous development of things, the accuracy of astronomical observation has gradually improved, and people have gradually discovered the flaw of geocentric theory. In the Renaissance, it was found that the number of equal wheels and circulation wheels proposed by Ptolemy was as high as 80 or so, which was obviously unreasonable and unscientific. People expect a scientific celestial system to replace the geocentric theory. Under this historical background, Copernicus's geocentric theory came into being.
About 15 15 years ago, Copernicus wrote a paper entitled "A Brief Talk", which expounded his basic views on celestial motion. He believes that celestial movement must meet the following seven points:
1 does not exist in the same orbit or the center of a celestial body.
The earth is only the center of gravity and orbit of the moon, not the center of the universe.
All celestial bodies revolve around the sun, and the center of the universe is near the sun.
On the same day, the ratio of the distance between the sun and the earth to the height of the sky is as small as that of radius of the earth. The ratio of the distance between the earth and the sun to the height of the sky is negligible.
Any movement seen in the sky is caused by the movement of the earth.
6. All the phenomena of the movement of the sun seen in the air are not caused by the movement of the sun itself, but by the movement of the earth. The earth has an atmosphere and revolves around the sun like other planets. Therefore, the earth carries out several sports at the same time.
7. The back and forth movement of the planet that people see is caused by the movement of the earth. The movement of the earth can explain various phenomena that people see in the air.
In addition, Copernicus also described the apparent motion of the sun, the moon, three outer planets (Saturn, Jupiter and Mars) and two inner planets (Venus and Mercury). In the book, Copernicus criticized Ptolemy's theory, scientifically expounded celestial phenomena, overthrew the long-standing dominant geocentric theory, fundamentally denied the Christian fallacy of God's creation of everything, and realized a fundamental change in astronomy.