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Astronomers Announce 5-Planet System 145

An anonymous reader writes "Astronomers have detected a record-breaking 5th planet orbiting the star 55 Cancri, 41 light years distant. This planet orbits within the 'habitable zone,' where water could presumably exist, but it's probably another gas giant like Saturn, so any liquid water would have to be on a moon. There's still a big gap between this planet and the outermost planet where no planets have been detected yet, so there could yet be a rocky planet in the system. The lead researcher said he's optimistic that 'continued observations will reveal a rocky planet within five years.'"

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