According to the New Unity Physics, the black hole is the fourth form of gravity manifestation in the universe.

Light matter is the familiar matter. Light energy is the known energy.

The known matter arises from light through the photosynthesis process.

Light arises from the interaction between quanta light.

Quantum light occurs when dark matter is converted from photons.

For more information:

https://545new.medium.com/theory-of-everything-and-the-dark-universe-85e8c5958ce6