Even before the facts had been uncovered and what was known of Pluto was principally its orbit, it was considered to be somewhat of an outsider among the planets. It goes around the Sun in an orbit that is very eccentric – it passes inside Neptune's orbit for part of the time. Also, the orbit lies at a surprisingly large, skewed angle to the orbital plane of all the other planets.
Excerpt from The Secret Lives of Planets: Order, Chaos, and Uniqueness in the Solar System, Paul Murdin
Excerpt from The Secret Lives of Planets: Order, Chaos, and Uniqueness in the Solar System, Paul Murdin
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