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But because its orbit does not conform to the law of universal gravitation, and there are large errors.
So after some years, Le Verrier independently calculated the existence of Neptune.
But soon, the astronomical community discovered another problem:
Neptune still can only explain about 70% of the orbital anomalies of Uranus.
So people think that there should be another planet in the outer orbit of Neptune.
Finally, Tombaugh discovered its ex ...
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