Science and technology

Associated Press
This photo provided and annotated by NASA/Hubble Space Telescope shows the five moons in their orbits around Pluto. The smallest moons — no more than 20 miles (32 kilometers) across — were discovered in that past two years and are currently referred to as P4 and P5. Astronomers announced a contest Monday, Feb. 11, 2013 to name the two tiny moons. Twelve choices are available at the website “plutorocks.” (AP Photo/NASA/Hubble Space Telescope)

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