Originally posted by leonheartmm
its simple, there is alot of motion in the universe. the earth also revolves around axis. technically, if it was the centre than it alone wuc be stationary and everything would move around IT. you misunderstand many implications of reletivity. assume that i is not infact the earth revolving but the universe revolving around us. now think for a second, the radii of the stars and galaxies which revolve around us would be too massive to right here. but technically, by ur assumption, they go around us in those orbits every 24 HOURS. such speeds are much much much mcuh much greater than the speed of light, and hence not possible by reletivity. conclusion, it is us moving and not the universe. the earth is not the centr of the universe.
Your assertion that the Earth rotates on its axis is just that, an assertion. You have no proof for that and to save you time I will tell you no experiment has ever proven it. Through centuries, scientists attempted experiments designed to measure this alleged motion of the Earth. All such experiments failed to detect it. The Theory of Relativity itself was formulated to explain the failure of any terrestrial experiment to detect either the motion of the earth rotating on its axis or the expected 30 km per second motion of the earth in its supposed annual orbit around the sun. I invite your attention to the famous Michelson-Morley interferometer experiments, which directly led to Einstein's theory of Relativity. As far as your assertion of the universe being "too massive" you are simply wrong. Basic physics will disclose that no matter how much mass exists, it will rotate around the center of mass (barycenter); and this center of mass will be motionless no matter how much mass is revolving around it. This principle can be observed in everyday life by simply observing the behavior of a gyroscope. As for your quite correct observation that the relative velocity of objects at a certain radius from Earth would exceed the speed of light, you must understand that Einstein's Relativity establishes "C" (or the speed of light) as a limit only in vacuum; and only in the absence of a gravitational field. It is quite consistent with General Relativity for objects to appear to move at a velocity greater then "C" when a sufficiently strong gravitational field is present. Also - and this is crucial - even Big Bang Theory allows stars to greatly exceed "C" when seen from Earth. This apparent contradiction is explained in Big Bang Theory by recourse to the notion that "space" itself is somehow "expanding" faster than "C" and carrying the stars along with it. I leave it to you to judge the plausibility of that explanation. But it is the case that in the Geocentric model it is not the stars, but rather the electron-positron lattice, which is moving faster than "C" and likewise carrying the stars along with it. Take your pick, physics can accommodate either model.