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Artist's concept of 55 Cancri's fifth-discovered planet

Artist's concept of 55 Cancri's fifth-discovered planet

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NASA / JPL-Caltech

Artist's concept of 55 Cancri's fifth-discovered planet
This image shows the fifth-discovered planet (fourth in distance from its star) of 55 Cancri, which is about half the mass of Saturn or twice that of Neptune.

As of November 2007 the nearby sunlike star was known to have five large planets in near-circular orbits around it, more than any other star except the Sun. The fourth planet orbits within the "habitable zone" of its star at a distance of 116.7 million kilometers (72.5 million miles), slightly closer than Earth to our sun, but it orbits a star that is slightly fainter.

Most NASA images are in the public domain. Reuse of this image is governed by NASA's image use policy.

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