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#::::The above discussion notwithstanding, more sophisticated technology has measured a precession of 5599.7 arc-seconds per century, with a margin of error of only 0.01, which disproves the prediction of the [[Theory of Relativity]]. Notice how publication of data stopped two decades ago when the observations diverged from the theory.--[[User:Aschlafly|Andy Schlafly]] 14:50, 14 April 2012 (EDT)
#:Measurements of planetary motion are now calculated relative to the "International Celestial Reference Frame" (ICFR), replacing the older, and much less accurate "equinoctial" frame. The older measurements got a value of about 5600 arcseconds/century for the precession of Mercury, nearly all of which (5025 arcseconds) was because of the rotation of the "equinoctial" frame. The ICFR frame removes that source of uncertainty, and, with the very accurate radar measurements conducted by NASA between 1987 and 1997<ref>[http://trs-new.jpl.nasa.gov/dspace/bitstream/2014/19295/1/98-0601.pdf]</ref>, gets a value of 574.10±0.65 arcseconds observed, in good agreement with the predicted 574.64±0.69 value.
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#:The ICFR is described in [http://www.iers.org/IERS/EN/Publications/TechnicalNotes/tn32.html this] document, dated 2003.
#''The discontinuity in momentum as velocity approaches "c" for infinitesimal mass, compared to the momentum of light.''
#:The formulas for velocity, momentum, and mass can in fact be written in such a way that they appear to have discontinuities, just as the tangent function has discontinuities while the underlying sine and cosine functions do not. But they can also be written in a form that does not show discontinuities.