Now the Sun isn't spherical, and it is rotating, but it isn't very aspherical and it isn't rotating very fast so to a good approximation our equation (1) will describe the spacetime curvature around it. In fact equation (1) is the equation used by Einstein when he achieved one of GR's first triumphs by calculating the perihelion shift of Mercury.
The core temperature of the sun is on the order of 15 million degrees kelvin while its surface temperature is around 6000k. What are the main factors which determine the surface temperature of the...
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