A team of scientists seeking to restore Pluto to planethood launched a campaign on Tuesday to broaden the astronomical classifications which led to its demotion to a "dwarf planet" a decade ago. Six scientists from institutions across the United States argued that Pluto deserves to be a full planet, along with some 110 other bodies in the solar system, including Earth's moon. In a paper presented at an international planetary science conference at The Woodlands, Texas, the scientists explained that geological properties, such as shape and surface features, should determine what constitutes a planet.

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