The Theory Of Everything

 

The theory of everything is a theory that does not exist yet. Every astrophysicist, quantum scientist, physicist, they're all ultimately working towards this theory. But why?

This is something that could explain every aspect of physics. There are four fundamental forces in the universe. Einstein's General Relativity explains gravity, quantum mechanics explains electromagnetism and strong and weak nuclear forces. 

But they don't combine, quantum physics deals with atoms and molecules and even smaller particles. Relativity is for massive celestial objects. So, any theory that combines both these worlds, covering the tiniest to the most massive objects, and explains all the four forces by itself, would be the theory of everything. 

That is it about the theory of everything, or the unified theory, or the final theory, or the ultimate theory, or the master theory.