Pluto Ninety three years ago an astrologer noticed slight variations in the orbit of the planet Uranus.Then the search began for a ninth planet.Twenty five years later a startling discovery was made. The year was nineteen thirty when Clyde William Tombaugh had discovered a ninth planet beyond Neptune.The telescopic search initiated twenty five years years before by the man who first noticed these variations in Uranus's orbit Percival Lowell had been a success.4670000000 miles (2670000000 kilometers) from Earth (at its closest point) a small yellowish colored marble was spotted.3666200000 miles (3666200000 kilometers) from the sun the smal....

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