Changes: Carbon planet

Revision as of 17:24, 22 March 2009

Carbon planets were a type of terrestrial planet where carbon was the most abundant element in the planet's mineralogy. Carbon planets formed in carbon rich protoplanetary disks around stars abundant with heavy elements - there carbon compounds such as graphite and carbides formed together faster than silicates that formed more common oxygen planets. Carbon planets featured rich iron cores, carbide mantles and predominantly graphite crusts with diamonds forming deeper in the crust under higher pressure. The surfaces of carbon planets featured hydrocarbon seas and carbon monoxide and methane atmospheres.

While relativity uncommon in the 24th century, it was expected that by a billion years later, as the galaxy aged and supernovae ejected more carbon into the mix, the ratio of carbon planets would increase, eventually becoming more common than oxygen planets.

The star cluster NGC 6281 contained systems with numerous carbon planets, even though the stars in NGC-6281 were not as high in heavy metals as one would expect for carbon planets to have formed. When the USS Enterprise investigated the cluster in 2380 the ship's science officer, Dina Elfiki, suggested the cluster may have passed through a carbon-rich dust cloud, which might explain how so many carbon planets had formed around those stars. The first officer, Worf, suggested that, based on the unusual abundance of anomalies in the region, the laws of physics may simply not apply as expected in the cluster.

The worlds in NGC 6281 featured relatively high levels of boron and phosphorus, which having formed in the planets' diamond crusts effectively made the planets giant semiconductors. Connected via subspace this made the entire star cluster one massive computer, and the largest cosmozoan ever encountered by the Federation. (TNG novel: Greater Than the Sum)

Appendices

Background

Christopher L. Bennett, the author of Greater Than the Sum, based his depiction of carbon planets on their description by Marc J. Kuchner and S. Seager in their paper Extra Solar Carbon Planets which theorised the existence of such worlds. The idea that the diamond layer might be able to form a natural computer is the author's own creation, and one that he admits in his acknowledgements and annotations for the book is scientifically implausible.

In Bennett's annotations for the novel he notes that the real NGC 6281 is comprised of star's with too low a heavy element abundance to ordinarily form carbon planets, which prompted him to add the discussion between characters in the novel exploring how carbon planets might have formed in that cluster.

External links

Carbon planet article at Wikipedia, the free encyclopedia.
Extrasolar Carbon Planets, the scientific paper proposing the idea of carbon planets.
Star's Planets Might Have Mountains of Diamonds, an article on Space.com about carbon planets.

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+{{PlanetClasses|
-'''Carbon planets''' are a type of terrestrial [[planet]] that form in carbon rich (and oxygen poor) protoplanetary disks. The core would be iron rich and surrounded by silicon carbide and titanium carbide. The mantle would be mainly made of graphite and multi-kilometer thick layer of diamond, provided sufficient pressure existed.<ref>[http://www.space.com/scienceastronomy/060607_carbon_excess.html Star's Planets Might Have Mountains of Diamonds]</ref> The surface would be abundant in hydrocarbons and carbon monoxide.
+Class Name    =Carbon planet |
+Image         = |
+Caption       = |
+Classification=Terrestrial |
+Age           = |
+Diameter      = |
+Location      = |
+Surface       =[[Graphite]] and [[diamond]] [[crust]]; [[hydrocarbon]] [[sea]]s |
+Atmosphere    =[[carbon monoxide]] and [[methane]] |
+Evolution     = |
+Life-Forms    = |
+altimage      = |
+|}}
+'''Carbon planets''' were a type of terrestrial [[planet]] where [[carbon]] was the most abundant element in the planet's mineralogy. Carbon planets formed in carbon rich [[protoplanetary disk]]s around [[star]]s abundant with [[heavy element]]s - there carbon compounds such as [[graphite]] and [[carbide]]s formed together faster than [[silicate]]s that formed more common [[oxygen planet]]s. Carbon planets featured rich [[iron]] [[planetary core|cores]], [[carbide]] [[mantle]]s and predominantly graphite [[crust]]s with [[diamond]]s forming deeper in the crust under higher pressure. The surfaces of carbon planets featured [[hydrocarbon]] [[sea]]s and [[carbon monoxide]] and [[methane]] [[atmosphere]]s.
+While relativity uncommon in the [[24th century]], it was expected that by a billion years later, as the galaxy aged and [[supernova]]e ejected more carbon into the mix, the ratio of carbon planets would increase, eventually becoming more common than oxygen planets.
-Carbon planets are predicted to be of similar diameter to silicate and water planets of the same mass, potentially making them difficult to distinguish.<ref>[http://arxiv.org/abs/astro-ph/0504214 Extrasolar Carbon Planets]</ref>
+The [[star cluster]] [[NGC 6281]] contained systems with numerous carbon planets, even though the stars in NGC-6281 were not as high in heavy metals as one would expect for carbon planets to have formed. When the {{USS|Enterprise|NCC-1701-E}} investigated the cluster in [[2380]] the ship's [[science officer]], [[Dina Elfiki]], suggested the cluster may have passed through a carbon-rich [[dust cloud]], which might explain how so many carbon planets had formed around those stars. The [[first officer]], [[Worf]], suggested that, based on the unusual abundance of [[subspace anomaly|anomalies]] in the region, the [[laws of physic]]s may simply not apply as expected in the cluster.
+The worlds in NGC 6281 featured relatively high levels of [[boron]] and [[phosphorus]], which having formed in the planets' diamond crusts effectively made the planets giant [[semiconductors]]. Connected via [[subspace]] this made the entire star cluster one massive [[computer]], and the largest [[cosmozoan]] ever encountered by the [[Federation]]. ({{n|TNG|Greater Than the Sum}})
-NGC-6281 has numerous carbon planets. ({{n|TNG|Greater Than the Sum}})
-==References==
+==Appendices==
+===Background===
-<references />
+[[Christopher L. Bennett]], the author of ''Greater Than the Sum'', based his depiction of carbon planets on their description by Marc J. Kuchner and S. Seager in their paper [http://arxiv.org/abs/astro-ph/0504214 Extra Solar Carbon Planets] which theorised the existence of such worlds. The idea that the diamond layer might be able to form a natural computer is the author's own creation, and one that he admits in his acknowledgements and [http://home.fuse.net/ChristopherLBennett/GTTSAnnot.html annotations] for the book is scientifically implausible.
+In Bennett's [http://home.fuse.net/ChristopherLBennett/GTTSAnnot.html annotations for the novel] he notes that the real NGC 6281 is comprised of star's with too low a heavy element abundance to ordinarily form carbon planets, which prompted him to add the discussion between characters in the novel exploring how carbon planets might have formed in that cluster.
-[[Category:Planets]]
-[[Category:Science]]
+===External links===
+*{{wikipedia}}
+*[http://arxiv.org/abs/astro-ph/0504214 Extrasolar Carbon Planets], the scientific paper proposing the idea of carbon planets.
+*[http://www.space.com/scienceastronomy/060607_carbon_excess.html Star's Planets Might Have Mountains of Diamonds], an article on Space.com about carbon planets.
+[[Category:Planetary classification]]