Planck stars

@inproceedings{Rovelli2014PlanckS,
  title={Planck stars},
  author={Carlo Rovelli and Francesca Vidotto},
  year={2014}
}
A star that collapses gravitationally can reach a further stage of its life, where quantum-gravitational pressure counteracts weight. The duration of this stage is very short in the star proper time, yielding a bounce, but extremely long seen from the outside, because of the huge gravitational time dilation. Since the onset of quantum-gravitational effects is governed by energy density —not by size— the star can be much larger than planckian in this phase. The object emerging at the end of the… 

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