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Picalilli

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- TL;DR Summary
- If a situation can exist where photons can escape black hole gravity, would “dark star” not be a more adequate name?

**Summary:**If a situation can exist where photons can escape black hole gravity, would “dark star” not be a more adequate name?

It is commonly accepted that once there is enough material put together to create a sphere with a mass big enough to prevent light from escaping, that this object then becomes some kind of death trap from which nothing can ever escape any more. This is commonly referred to as a “black hole” and the thesis then is that even no photon can ever escape a “black hole”.

Is this always the case?

Let's perform the following “Gedankenexperiment”:

Let's have two identical stars(

*S1*and

*S2*) with diameter

*d*and each having a mass between 101% and 103% of critical mass to prevent light from escaping. Both

*S1*and

*S2*qualify as “black hole”. Two parallel lines(

*a1*and

*a2*)are at distance

*b*from each other.

*S1*has it's center of mass on

*a1*and the center of mass of

*S2*is on

*a2*.

*S1*and

*S2*are at least 300 000 light-years apart.

*S1*and

*S2*are sent flying towards each other along

*a1*and

*a2*at a relative starting speed between 75 and 85 % of the speed of light. Distance

*b*has to be chosen such that the centers of mass of

*S1*and

*S2*come at least at one point closer to each other than 2.5

*d*and never closer than 2

*d*, no matter what shape or mix the matter of

*S1*and

*S2*ever evolve to. As

*S1*and

*S2*approach each other and they both are composed of plasma and are not solid, a tidal effect will set in and both

*S1*and

*S2*will change shape (The force of gravity is directly related to the amount of mass, but so is the force of inertia). Losing their spherical shape results in weakening the gravity force on the edge of the system. If weakening the force of gravity results in photons escaping, the thesis doesn't hold water and black hole gravity can be overpowered. (2019-10-30)