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Line 12:
Line 12: − − − − Since the advent of relativity theory in the early 1900s, the laws of physics have been written in covariant equations, meaning that they are equally valid in any frame. Heliocentric and geocentric theories are both used today, depending on which allows more convenient calculations. −
→Ptolemy's system: No. No-one now believes that all other planets orbit around the Earth.
[[Johannes Kepler]] used Brahe's measurements to improve the [[Heliocentrism|heliocentric]] system Copernicus had proposed, showing that planets had elliptical orbits around the sun. When [[Isaac Newton]] applied his newly discovered [[gravitation|universal theory of gravitation]] to the data, he found that a heliocentric model was the only one that could explain all observed phenomena. By the 1800s, the spectacular successes of Newtonian theory and [[Maxwell's equations]] for electromagnetism had convinced practically everyone that the Sun is a preferred frame of reference, and that the laws of physics must be applied in that frame. The geocentric theory was finally considered to be profoundly mistaken.
[[Johannes Kepler]] used Brahe's measurements to improve the [[Heliocentrism|heliocentric]] system Copernicus had proposed, showing that planets had elliptical orbits around the sun. When [[Isaac Newton]] applied his newly discovered [[gravitation|universal theory of gravitation]] to the data, he found that a heliocentric model was the only one that could explain all observed phenomena. By the 1800s, the spectacular successes of Newtonian theory and [[Maxwell's equations]] for electromagnetism had convinced practically everyone that the Sun is a preferred frame of reference, and that the laws of physics must be applied in that frame. The geocentric theory was finally considered to be profoundly mistaken.
== Scripture Quoted to justify Geocentric Theory ==
== Scripture Quoted to justify Geocentric Theory ==