Astronomers Announce 5-planet System

An anonymous reader writes: Astronomers have detected a record-breaking 5th planet orbiting the star 55 Cancri. This planet orbits within the Habitable Zone, where water could presumably exist, but it's probably another gas 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 detected yet, so there could yet be a rocky planet in the system.