What is Outer planet?
[[Image:Gas giants in the solar system.jpg|thumb|250px|From top to bottom: [[Neptune (planet)|Neptune]], [[Uranus (planet)|Uranus]], [[Saturn (planet)|Saturn]], and [[Jupiter (planet)|Jupiter]] to approximate scale and color.]] The '''outer planets''' are [[planets]] in the [[Solar System]] that are beyond the [[asteroid belt]]. The four planets; [[Jupiter (planet)|Jupiter]], [[Saturn (planet)|Saturn]], [[Uranus (planet)|Uranus]] and [[Neptune (planet)|Neptune]] are [[gas giant]]s. All four of these planets have [[planetary ring]]s which are made up of [[dust]] and other [[particles]].<ref>{{cite web|last=Wolf|first=Portia|title=The Outer Planets|url=http://lasp.colorado.edu/education/outerplanets/rings.php|work=Laboratory For Atmosphere And Space Physics|publisher=[[University of Colorado]]|accessdate=2 April 2012|archive-date=30 December 2011|archive-url=https://web.archive.org/web/20111230045627/http://lasp.colorado.edu/education/outerplanets/rings.php|url-status=dead}}</ref> == Related pages == * [[Moons of Jupiter]] - [[Rings of Jupiter]] * [[Moons of Saturn]] - [[Rings of Saturn]] * [[Moons of Uranus]] - [[Rings of Uranus]] * [[Moons of Neptune]] - [[Rings of Neptune]] * [[Inner planet]] == References == {{reflist}} == More reading == *[http://www.lpi.usra.edu/opag/nov_2007_meeting/presentations/solar_power.pdf Scott W. Benson – '''Solar Power for Outer Planets Study''' (2007) – NASA Glenn Research Center] *[http://www.nasa-academy.org/soffen/travelgrant/bethke.pdf Trautman and Bethke – '''Human Outer Planet Exploration''' (2003) – NASA Langley Research Center and Princeton University] {{Webarchive|url=https://web.archive.org/web/20120119170143/http://www.nasa-academy.org/soffen/travelgrant/bethke.pdf |date=2012-01-19 }} == Other websites == *[http://www.lpi.usra.edu/opag/ Outer Planets Assessment Group (NASA)] **[http://www.lpi.usra.edu/opag/Oct2011/presentations/ October 2011 OPAG Presentations] *[http://sites.nationalacademies.org/SSB/SSB_059331 Planetary Science Decadal Survey Mission & Technol