Revision history of "Heliocentrism"

This is a list of past revisions of Heliocentrism. Each is preserved exactly as it was last seen, which is to say approximately, and not necessarily here. Diffs are unavailable; the two versions could not be brought to the same location at the same time.

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• cur | prev April 2016 T. Vogel (talk | contribs) . . (2,000 bytes) (+300) . . (→ In this encyclopedia: adopted in 1543, demonstrated in 1729, and correct throughout the interval. the encyclopedia's one case of a thing believed well ahead of its evidence and vindicated for it) (current)
• cur | prev 1977 a radiometrist (talk | contribs) . . (1,700 bytes) (+110) . . (→ Evidence: the microwave sky is warmer one way than the other, and the difference alters through the year by the amount the orbit requires)
• cur | prev 1918 A. Einstein (talk | contribs) . . (1,590 bytes) (+140) . . (→ Frames: coordinates may be chosen freely and I have said so. which frame is inertial is not a matter of choosing, and is measured)
• cur | prev 1897 the Mud Geometer (talk | contribs) . . (1,450 bytes) (+70) . . (I HAVE WATCHED THE SKY GO OVER EVRY NITE OF MY LIFE. IT IS THE SKY WHAT MOVES. PUT THAT IN)
• cur | prev 1866 J. van Radewijn (talk | contribs) . . (1,380 bytes) (+80) . . (→ Objections: the radius they use is short by thirty radians and everything built upon it follows the radius)
• cur | prev 1861 S. Rowbotham (talk | contribs) . . (1,300 bytes) (+120) . . (→ Objections: restored, and the water on the Bedford Level lies flat over six miles, which no shifting star will alter)
• cur | prev December 1838 F. Bessel (talk | contribs) . . (1,180 bytes) (−190) . . (→ Objections: struck Brahe's. the shift is there, at a third of a second in Cygnus. it stood two hundred and fifty years, and he was right to raise it)
• cur | prev 1729 an astronomer hunting parallax (talk | contribs) . . (1,370 bytes) (+130) . . (→ Evidence: found instead a yearly shift of twenty seconds, alike for every star at every distance. it gives the Earth's velocity rather than its position, but the velocity is the Earth's)
• cur | prev 1687 I. Newton (talk | contribs) . . (1,240 bytes) (+210) . . (→ supplied the force that holds them in it. the arrangement was correct for a century and a half before anyone could say why, which I set down without comment)
• cur | prev 1619 J. Kepler (talk | contribs) . . (1,030 bytes) (+170) . . (→ struck the epicycles. the orbits are ellipses and the circles were never wanted. it is now simpler than the thing it replaced and not merely different from it)
• cur | prev 1610 an observer with a new glass (talk | contribs) . . (860 bytes) (+150) . . (→ Evidence: Venus shows the whole round of phases, gibbous ones among them. the Ptolemaic arrangement allows crescents only. that arrangement is finished. this one and Brahe's are not)
• cur | prev 1588 Tycho Brahe (talk | contribs) . . (710 bytes) (+190) . . (→ Objections: if the Earth runs a great circle then the nearer stars must shift against the further ones, and they do not. either it stands still or they are unthinkably far off, and I have looked with the best instruments in Europe)
• cur | prev 1543 N. Copernicus (talk | contribs) . . (520 bytes) (+520) . . (created; the Sun at the centre and the Earth among the planets. the retrograde loops now fall out of the arrangement instead of being put in by hand. I have kept the circles, which will want attention from someone)

Older revisions exist but have not been located. The page is believed to retain a full history; it is simply not all in one place.