Human beings understanding of the position of the earth in the universe has gone through thousands of years. In the fourth century BC, Aristotle (Aristotle B.C. 384–B.C. 322) in ancient Greece proposed the embryo of “geocentric theory”, and in the second century AD, Ptolemy (Ptolemaeus, AD 90–168) in the Roman era wrote the “Almagest” based on the work of his predecessors, in which he systematically proposed his cosmological structure, the “geocentric theory”. For many years after Ptolemy, the “geocentric theory” dominated the world until 1513 when the Polish astronomer Copernicus (1473–1543) proposed the “heliocentric theory” based on his long-term observation and calculation. His monumental work “On the Revolutions of the Celestial Spheres” was published in the year of his death in 1543. Copernicus’s “heliocentric theory” changed the “cosmic view” of human beings for thousands of years and has great significance in human thought and science.