Timeline of astronomy Rectification of Planetary Theory", eliminated the need for an equant by introducing an extra epicycle, departing from the Ptolemaic system in a way very similar to what Copernicus later also did. Ibn al-Shatir proposed a system that was only approximately geocentric, rather than exactly so, having demonstrated trigonometrically that the Earth was not the exact center of the universe. His rectification is later used in the Copernican model. Nicolaus Copernicus publishes "De revolutionibus orbium coelestium" containing his theory that Earth travels around the Sun. However, he complicates his theory by retaining Plato's perfect circular orbits of the planets. A brilliant
The House of the Rising Sun no clear relationship between the two songs. Lomax proposed that the location of the house was then relocated from England to New Orleans by white southern performers. However, Vance Randolph proposed an alternative French origin, the "rising sun" referring to the decorative use of the sunburst insignia dating to the time of Louis XIV, which was brought to North America by French immigrants. "House of Rising Sun" was said to have been known by miners in 1905. The oldest published version of the lyrics is that printed by Robert Winslow Gordon in 1925, in a column "Old Songs That Men