The success and achievement of quantum gravity is describing of fundamental interaction in universe. There exists four fundamental interaction in universe.
Strong force
Weak force
Electromagnetism
Gravitational force
Only gravitational force is describes by general theory of relativity. But other three fundamental interaction in universe is describes by quantum mechanics and quantum gravity.
Strong force
Weak force
Electromagnetism
Gravitational force
Only gravitational force is describes by general theory of relativity. But other three fundamental interaction in universe is describes by quantum mechanics and quantum gravity.
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