Could Life Survive Inside a Black Hole? Stable planetary orbits are theorized to exist inside black hole event horizons; advanced lifeforms may live there too.

n a paper written for the journal Journal of Cosmology and Astroparticle Physics and appearing on the pre-press website arXiv.org, Dokuchaev follows on from previous theories that subatomic particles such as photons can have stable orbits inside the internal structure of some black holes.
He says supermassive black holes at the center of galaxies could allow particles, and perhaps even planets with life, to orbit the singularity without being destroyed.
The singularity is located at the heart of a black hole, and is the place where the laws of physics and space-time break down.   link