outer planets
61Solar System — This article is about the Sun and its planetary system. For other systems, see planetary system and star system. For a list of physical and orbital statistics for the Solar System s largest bodies, see List of gravitationally rounded objects of… …
62Formation and evolution of the Solar System — Artist s conception of a protoplanetary disk The formation and evolution of the Solar System is estimated to have begun 4.568 billion years ago with the gravitational collapse of a small part of a giant molecular cloud …
63solar system — the sun together with all the planets and other bodies that revolve around it. [1695 1705] * * * The Sun, its planets, and the small bodies (see asteroid, Centaur object, comet, Kuiper belt, meteorite, and Oort cloud) interplanetary dust and gas… …
64Oort cloud — An artist s rendering of the Oort cloud and the Kuiper belt (inset). Sizes of individual objects have been exaggerated for visibility …
65Comet — This article is about the astronomical object. For other uses, see Comet (disambiguation). Comet Hale– …
66Kuiper belt — Known objects in the Kuiper belt, derived from data from the Minor Planet Center. Obje …
67Nice model — The Nice model (pronounced /ˈniːs/, like niece) is a scenario for the dynamical evolution of the Solar System. It is named for the location of the Observatoire de la Côte d Azur, where it was initially developed, in Nice, France.[1][2] It… …
68Jupiter — This article is about the planet. For other uses, see Jupiter (disambiguation). Jupiter   …
69Neptune — This article is about the planet. For other uses, see Neptune (disambiguation). Neptune   …
70astronomy — /euh stron euh mee/, n. the science that deals with the material universe beyond the earth s atmosphere. [1175 1225; ME astronomie ( < AF) < L astronomia < Gk. See ASTRO , NOMY] * * * I Science dealing with the origin, evolution, composition,… …
