Although Einstein was correct about many things, General Relativity does not explain the singularities in Black Holes or during the Big Bang. A singularity occurs when an infinite amount of matter and energy is compressed into an infinitely small space and GR does not explain how or why this happens.
It is also not compatible with Quantum physics, which has a different set of laws than Astrophysics, so I developed a new electromagnetic theory of Gravity which states that Gravity is the result of the angular momentum of mass interacting with the electromagnetic fields in space.
It is being adopted throughout the physics community and is leading to significant advancements in Energy, Materials, Transportation, Computing, etc.
You can read more about it in my book “Insights on Gravity” on Apple Books or watch a short video on my new Theory of EM Gravity.