We already know the limits of Einstein's theories. From the centers of black holes at the very beginning of the universe - we call these singularities - Einstein's equations fail. In fact, people have joked that's where God is dividing… — Neil deGrasse Tyson Copy Share Image
If you look at Einstein's equations and put in low speeds and low gravity, they become Newton's equations. — Neil deGrasse Tyson Copy Share Image
