Orbiting from 2.7 to 3.6 billion miles from the sun, ______
The astronomer clyde tombaugh discovered pluto in 1930
Pluto was discovered by the astronomer clyde tombaugh in 1930
it was 1930 that the astronomer clyde tombaugh discovered pluto
the discovery of pluto was made by the astronomer clyde tombaugh in 1930.
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