Outline of Neptune
Overview of and topical guide to Neptune
The following outline is provided as an overview of and topical guide to Neptune:
Neptune – eighth and farthest known planet from the Sun in the Solar System. In the Solar System, it is the fourth-largest planet by diameter, the third-most-massive planet, and the densest giant planet. Neptune is 17 times the mass of Earth and is slightly more massive than its near-twin Uranus, which is 15 times the mass of Earth and slightly larger than Neptune.[a] Neptune orbits the Sun once every 164.8 years at an average distance of 30.1 astronomical units (4.50×109 km). It is named after the Roman god of the sea and has the astronomical symbol ♆, a stylised version of the god Neptune's trident.
Classification of Neptune
- Astronomical object
- Gravitationally rounded object
- Planet
- Giant planet
- Ice giant
- Planet of the Solar System
- Outer planet
- Superior planet
- Giant planet
- Planet
- Gravitationally rounded object
Location of Neptune
- Milky Way Galaxy – barred spiral galaxy
- Orion Arm – a spiral arm of the Milky Way
- Solar System – the Sun and the objects that orbit it, including 8 planets, the eighth and furthest planet from the Sun being Neptune
- Orion Arm – a spiral arm of the Milky Way
Movement of Neptune
Features of Neptune
Natural satellites of Neptune
Inner moons of Neptune
- Naiad
- Thalassa
- Despina
- Galatea
- Larissa
- Hippocamp
- Proteus
Retrograde moons of Neptune
- Triton
- Halimede
- Psamathe
- Neso
- S/2021 N 1
Prograde moons of Neptune
- Nereid
- Sao
- Laomedeia
- S/2002 N 5
History of Neptune
Exploration of Neptune
Flyby missions to explore Neptune
Future of Neptune exploration
Proposed missions to explore Neptune
See also
Notes
- ^ Neptune is denser and physically smaller than Uranus because Neptune's greater mass gravitationally compresses the atmosphere more.
References
External links
Neptune at Wikipedia's sister projects
- Definitions from Wiktionary
- Media from Commons
- News from Wikinews
- Quotations from Wikiquote
- Texts from Wikisource
- Textbooks from Wikibooks
- Resources from Wikiversity
- NASA's Neptune fact sheet
- Neptune from Bill Arnett's nineplanets.org
- Neptune Astronomy Cast episode No. 63, includes full transcript.
- Neptune Profile at NASA's Solar System Exploration site
- Planets – Neptune A children's guide to Neptune.
- Merrifield, Michael; Bauer, Amanda (2010). "Neptune". Sixty Symbols. Brady Haran for the University of Nottingham.
- Neptune by amateur (The Planetary Society)
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