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The matter is still far from closed. Many scientists today still believe that Pluto is in fact a planet, and support a more expansive definition of what are called planets, rather than the more narrow one advocated by the majority of the scientists at the Prague convention. But although most people cannot remember when Pluto was not a planet, scientifically speaking, in comparison to the other planets, Pluto was discovered relatively recently, in 1930 by Clyde W. Tombaugh at the Lowell Observatory in Flagstaff Arizona (Cain, Why is Pluto not a planet? 2008). The discovery had long been anticipated given astronomers had predicted that there would be a 9th planet in the solar system, based upon the behavior of other astral bodies. Tombaugh, while comparing photographic plates of images of a region of the sky, taken two weeks apart noted a moving object in the right orbit of one of the photographs. The object could have been an asteroid, cometor a planet. Astronomers speculated and then confirmed that this was the long-sought after Planet X, the 9th planet of the solar system. They even held a contest to name that planet which was won by an eleven-year-old schoolgirl in

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