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5th moon found orbiting Pluto

from Hubble Site

Astronomers using the Hubble Space Telescope have reported that they have spotted a fifth moon orbiting Pluto. The moon is estimated to be irregular in shape and six to 15 miles across. It is in a 58,000-mile-diameter circular orbit around Pluto that is assumed to be co-planar with the other satellites in the system. The Pluto team is intrigued that such a small planet can have such a complex collection of satellites. The new discovery provides additional clues for unraveling how the Pluto system formed and evolved. The favored theory is that all the moons are relics of a collision between Pluto and another large Kuiper belt object billions of years ago. more

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