History of Study
Heliocentrism is the theory that the Sun is at the center of the Solar System. Historically, heliocentrism is opposed to geocentrism, which places the earth at the center. In the 16th century, Nicolaus Copernicus's De revolutionibus presented a full discussion of a heliocentric model of the universe in much the same way as Ptolemy's Almagest had presented his geocentric model in the 2nd century. This 'Copernican revolution' resolved the issue of planetary retrograde motion by arguing that such motion was only perceived and apparent, rather than real...
Read more about this topic: Earth's Orbit
Famous quotes containing the words history of, history and/or study:
“Every library should try to be complete on something, if it were only the history of pinheads.”
—Oliver Wendell Holmes, Sr. (1809–1894)
““And now this is the way in which the history of your former life has reached my ears!” As he said this he held out in his hand the fatal letter.”
—Anthony Trollope (1815–1882)
“One thing I am determined on is that by the time I die my brain shall weigh as much as a man’s if study and learning can make it so.”
—M. Carey Thomas (1857–1935)