Changes

#:Now it happens that there ''is'' a connection between solar oblateness and the calculation of the precession of the perihelion of Mercury, and that involves General Relativity.  When checking the observed precession against the effect predicted by Relativity, one needs to subtract the effect of solar oblateness, along with the other effects, such as equinoctial precession and the gravitational effects of other planets.  The effect of solar oblateness is a mere .0254 arcseconds per century, insignificant in comparison with precession (about 5500) and other planets' gravity (about 550).  The figure of .0254 was calculated based on what fluid dynamics predicted, and was subtracted in the figures quoted below in item #9.  When that tiny effect is removed, the error bars still overlap that for the GR prediction.

#:Now it happens that there ''is'' a connection between solar oblateness and the calculation of the precession of the perihelion of Mercury, and that involves General Relativity.  When checking the observed precession against the effect predicted by Relativity, one needs to subtract the effect of solar oblateness, along with the other effects, such as equinoctial precession and the gravitational effects of other planets.  The effect of solar oblateness is a mere .0254 arcseconds per century, insignificant in comparison with precession (about 5500) and other planets' gravity (about 550).  The figure of .0254 was calculated based on what fluid dynamics predicted, and was subtracted in the figures quoted below in item #9.  When that tiny effect is removed, the error bars still overlap that for the GR prediction.

#''Quantum entanglement near the event horizon of a black hole ....''

#''Quantum entanglement near the event horizon of a black hole ....''

#:It is well known that quantum gravity (that is, the "Theory of Everything") is an unsolved problem, and it is the subject of much discussion in the physics community.  The whole topic of string theory, for example, revolves around this.  Among the places where General Relativity and Quantum Mechanics collide most notoriously is within the Planck length of a black hole's event horizon.  Among the issues involved is the notion of "quantum loss of information", that was the subject of a famous bet among Stephen Hawking, Kip Thorne, and John Preskill.  (Hawking and Thorne lost.)  Basically, physicists do not know just what happens within quantum-mechanical distances (the Planck length) of a black hole.  But no one doubts the behavior of black holes at reasonable distances, or, for that matter, General Relativity at reasonable distances.

#:It is well known that quantum gravity (that is, the "Theory of Everything") is an unsolved problem, and it is the subject of much discussion in the physics community.  The whole topic of string theory, for example, revolves around this.  Among the places where General Relativity and Quantum Mechanics collide most notoriously is within the Planck length of a black hole's event horizon.  Among the issues involved is the notion of "quantum loss of information", that was the subject of a famous bet among Stephen Hawking, Kip Thorne, and John Preskill.  (Hawking and Thorne lost.)  Basically, physicists do not know just what happens within quantum-mechanical distances (the Planck length) of a black hole.  But no one doubts the behavior of black holes at reasonable distances, or, for that matter, General Relativity at reasonable distances.[[Image:600px-Albert Einstein Head.jpg|thumbnail|right|200px|

#''The speed of light in a vacuum is slower than expected''

#''The speed of light in a vacuum is slower than expected''

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