FILE - This file image provided by NASA on Feb. 22, 2006 

FILE - This file image provided by NASA on Feb. 22, 2006 from it's Hubble Space Telescope shows Pluto and three of it's five moons. Astronomers announced a contest Monday, Feb. 11, 2013 to name the two tiny moons of Pluto discovered over the past two years. Twelve choices are available at the website “plutorocks.” (AP Photo/NASA, File)
Associated Press
FILE - This file image provided by NASA on Feb. 22, 2006 from it's Hubble Space Telescope shows Pluto and three of it's five moons. Astronomers announced a contest Monday, Feb. 11, 2013 to name the two tiny moons of Pluto discovered over the past two years. Twelve choices are available at the website “plutorocks.” (AP Photo/NASA, File)
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