Editing Solar System (section)

== Orbits of the planets ==
The [[Earth's orbit]] around the Sun is nearly a perfect circle, but in a very slightly oval shaped orbit, an [[orbit|elliptical orbit]]. The other [[planet]]s in the Solar System also orbit the Sun in slightly elliptical orbits. [[Mercury (planet)|Mercury]] has a more elliptical orbit than the others, and there is obviously some explanation for this. Some of the smaller objects orbit the Sun in very [[orbit|eccentric orbits]]. The planets all orbit the Sun in the same direction.<ref>{{Cite book|title=From dust to life : the origin and evolution of our solar system|url=https://archive.org/details/fromdusttolifeor0000cham|last1=Chambers|first1=John|last2=Mitton|first2=Jacqueline|publisher=Princeton University Press|year=2014|isbn=978-0-691-14522-8|location=Princeton, New Jersey|oclc=859181634}}</ref>{{rp|4-5}}

A full account of the planetary motion needs an account of the ''n''-body problem, which is not treated on this wiki. A page can be found on En wiki.