N.A.S.A. Sciencecasts at YouTube have presented a new video on planets fried by their star's expansion in the red giant phase. Its quite good.
http://www.youtube.com/watch?v=h1V7-ZNPeXc Fried Planets
Since the discovery (very probable) of the Higgs particle confirming the existence of the Higgs Field it does make one wonder if gravity is simply a change of charge (flip flop) of local areas of the Higgs Field from positive (space expands) to negative (space-time contracts) in the presence of mass or energy.
Stars such as white dwarfs and neutron stars approach the quantity of mass that creates a black hole (formerly known as a Mitchell dark star) have enough quantum degeneracy pressure to resist the complete inward collapse of mass in gravity. Space-time is quite warped by such mass density. Stars like the sun that expand into a red giant phase in a few billion years through the process of burning up their hydrogen then helium and so forth fuel singe planets in orbit nearby.
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