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Four more moons have been discovered in the past two months orbiting Saturn, bringing the total to 22, which is more than any other planet in the Solar System. This was announced by Matt Holman of the Harvard-Smithsonian Centre for Astrophysics in Cambridge, Massachusetts. Holman says that the moons are only 10-50 kilometres across. Their orbits have not yet been calculated, but they are thought to be irregular.

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