Fifth Moon Discovered Around Pluto

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A team of astronomers using NASA’s Hubble Space Telescope have discovered another moon orbiting the dwarf planet Pluto.

They say the new moon, Pluto's 5th, is likely irregular in shape and 6 to 15 miles across. Provisionally designated S/2012 (134340) 1, it was detected in nine separate sets of images taken by Hubble’s Wide Field Camera 3 on June 26, 27, 29, and July 7 and 9. The moon circles Pluto in a 58,000 mile-diameter orbit.

http://science.nasa.gov/science-news/science-at-nasa/2012/13jul_pluto5/