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Sputnik satellite among official namesakes for dwarf planet Pluto surface features [i]Earth's first artificial satellite, launched 60 years ago next month, journeyed only a short distance into space, but its legacy now reaches out to the farthest ends of our traditional solar system. A large plain on the surface of the dwarf planet Pluto has been officially given the name "Sputnik Planitia," after the former Soviet Union's Sputnik satellite launched on Oct. 4, 1957. The small (23 inch or 58 centimeter) polished metal sphere circled Earth in an elliptical orbit that at its farthest extended 590 miles (950 kilometers) above the planet.[/i]
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