Hilingon an source kan Neptuno

[[Ladawan:Neptune Voyager2 color calibrated, brightened.png|thumb|Retrato kan Neptuno na kua kan ''Voyager 2'' kan NASA kaidtong 1989]]
An '''Neptuno'''  (simbolo: [[File:Neptune symbol (fixed width).svg|16px|♆]]; [[Ingles]]: ''Neptune'') iyo an ikawalo asin an pinakaharayong bistadong [[Planeta|planetang]] Solar hali sa [[Saldang]]. Sa [[Sistemang Solar]], ini an ikaapat na pinakadakulang planeta sa diyametro, an ikatolong pinakamagabat na planeta, asin an may pinakahalangkaw na densidad sa mga higanteng planeta. 

Ini iyo 17 na beses an [[masa]] kumpara sa [[Kinaban]], mas kadikit na mas magabat sa haraning kambal kaini na [[Urano]]. An Neptuno may mas halangkaw na densidad asin pisikal na mas sadit kaysa sa Urano huli ta an magabat na masa kaini iyo minakawsa nin mas dakulang grabitasyonal na kompresyon sa atmospera kaini. An planeta minaikot sa Saldang sarong beses kada 164.8&nbsp;na taon sa kabilugang distansya na {{convert|30.1|AU|e9km e9mi|1|lk=in|abbr=unit}}. Ini iyo pinangaranan pagkatapos sa Romanong diyos kan kadagatan asin may astronomikal na simbolong ♆, sarong maistilong bersyon nin ''trident'' kan diyos na si Neptuno.

Arug kan [[Hupiter]] asin [[Saturno]], an [[atmospera]] kan Neptuno iyo pangenot na pigbibilog nin [[hidroheno]] asin [[elyo]],  kaiba an kadikiton na mga [[hidrokarburo]] asin posible an [[nitroheno]], maski ngani igwa ini nin mas halangkaw na proporsyon nin mga "yelo" arug kan [[tubig]], [[amonya]], asin [[metano]]. Alagad, kaparehas kan Urano, an laog kaini iyo pangenot na pigbibilog nin mga yelo asin gapo;<ref>Podolak, M.; Weizman, A.; Marley, M. (December 1995). "Comparative models of Uranus and Neptune". ''Planetary and Space Science''. '''43''' (12): 1517–22. Bibcode:1995P&SS...43.1517P. doi:10.1016/0032-0633(95)00061-5.</ref> an Urano asin Neptuno iyo normal na pigkokonsidera bilang "higanteng yelo" para maipahiling an distinksyong ini.<ref>Lunine, Jonathan I. (September 1993). "The Atmospheres of Uranus and Neptune". ''Annual Review of Astronomy and Astrophysics''. '''31''': 217–63. Bibcode:1993ARA&A..31..217L. doi:10.1146/annurev.aa.31.090193.001245.</ref> An kadikiton na metano sa panluwas na mga rehiyon kaini iyo partidang minakawsa kan asul na hitsura kaini,<ref name="bluecolour">{{cite web|first=Kirk|last=Munsell|author2=Smith, Harman|author3=Harvey, Samantha|date=13 November 2007|url=http://solarsystem.nasa.gov/planets/profile.cfm?Object=Neptune&Display=OverviewLong|title=Neptune overview|website=Solar System Exploration|publisher=NASA|access-date=20 February 2008|url-status=dead|archive-url=https://web.archive.org/web/20080303045911/http://solarsystem.nasa.gov/planets/profile.cfm?Object=Neptune&Display=OverviewLong|archive-date=3 March 2008}}</ref> alagad an dae bistong komposisyon iyo pighohona na minakulay sa Neptuno kan hararom na asul kaini kumpara sa Urano.<ref name="bluecolour" />

== Panluwas na takod ==
{{commons|Neptune (planet)|Neptuno}}
* [http://nssdc.gsfc.nasa.gov/planetary/factsheet/neptunefact.html NASA's Neptune fact sheet]
* [http://www.nineplanets.org/neptune.html Neptuno] gikan sa nineplanets.org ni Bill Arnett 
* [http://www.astronomycast.com/astronomy/episode-63-neptune/ Neptuno] Astronomy Cast episode No. 63, kabali an bilog na transkript.
* [https://web.archive.org/web/20021115171710/http://solarsystem.nasa.gov/planets/profile.cfm?Object=Neptune Panindog kan Neptuno] sa [http://solarsystem.nasa.gov NASA's Solar System Exploration site]
* [http://www.projectshum.org/Planets/neptune.html Planets&nbsp;– Neptune] Sarong basahon dapit sa Neptuno para sa kaakian.
* {{cite web |last=Merrifield |first=Michael |title=Neptune |url=http://www.sixtysymbols.com/videos/neptune.htm |website=Sixty Symbols |publisher=Brady Haran for the University of Nottingham |author2=Bauer, Amanda |date=2010}}
* [http://www.planetary.org/blogs/guest-blogs/2013/neptune-the-new-amateur-boundary.html Neptune by amateur] (The Planetary Society)
* [https://gravitysimulator.org/solar-system/the-neptunian-system Interactive 3D gravity simulation of Neptune and its inner moons] {{Webarchive|url=https://web.archive.org/web/20200922021820/https://gravitysimulator.org/solar-system/the-neptunian-system/ |date=22 September 2020 }}
* [https://apod.nasa.gov/apod/neptune.html NASA Astronomy Picture of the Day Index - Solar System: Neptune]
== Toltolan ==
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[[Kategorya:Mga Planeta]]