Long before the times of Newton, LaPlace, and Cavendish, astronomers and early physicists were speculating on the existence of "dark stars" -- stars which in fact are invisible. Explained by complicated Newtonian mechanics, light that is emitted at the surface of a dark star is trapped by the star’s gravity -- thus rendering it dark. Hence the name "dark star."
Unlike another phenomenon in the universe, the black hole, in the case of a dark star the 'object' behind the horizon is assumed to be stable against collapse. It is right there, with mass and stability, but it is unrecognizable (you just cannot see it) due to the implosion of light.
People have been asking me 'what is the meaning?' of the recent story "A Dark Star." This note should lend some insight with regard to that question.
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