Solar Interior May Reveal Modifications to Gravity - Technology Review: In a weak gravitational field, like that inside the Earth, Einstein's equations reduce to their Newtonian equivalent and are well understood.
But in a much stronger field, the answer is not so clear cut because nobody knows how the distortion of spacetime occurs inside matter...
...these small modifications to gravity should influence the internal structure of the Sun and that we ought to be able to spot them with measurements we can make today...
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