Planets

There are three main categories of planets: Solid planets, water giants and gas giants. Even moons are considered as planets.

Terrestrial planet

Image	Class	Color	Exploration Value (with detailed surface scanner?)	Rarity	In game description
File:Icy-180px.png	Icy planet	White - Grey	~500cr	Very common	Ice world composed mainly of water ice. Worlds like this will not have much heating in the past, forming in the cooler regions of a star system and have retained many volatiles as solids withing their crust.
File:Rocky-Planets-180px.png	Rocky planet	White - Grey - Light blue - Light brown - Yellow	~500cr	Common	Rocky world with little or no surface metal content. Worlds like this have lost most of their volatiles due to past heating, and any metallic content will form a small central core.
File:Rocky ice.png	Rocky ice planet	White - Grey - Light blue - Light brown	~500cr	Uncommon	Rocky ice world. Typically formed in the cooler regions of star system these worlds have a small metal core and thick rocky mantle with a crust of very deep ice. Geological activity is common in these worlds because of the large quantities of volatiles in the crust, often creating a thin, sometimes seasonal atmosphere.
File:High-Metal-Content-Planets-180px.png	High metal content planet	Brown - Dark brown - Beige	2,500cr	Uncommon	Metal-rich world with a metallic core. Worlds like this can have metallic ores near the sruface in places, especially around areas of past volcanism.
File:Metal rich.png	Metal rich planet	Brown - Black (sometime with visible lava)	~5,000cr	Rare	High metal content worlds like this have a large metallic core, with plentiful metallic ores even at the surface. In places, especially around areas of past or current volcanism or liquid erosion, some higher metals can be found in their elemental form too. Mining is therefore very efficient, so these worlds are highly valued.
File:Water-World-180px.png	Water world	Blue with green, brown and white	unknown (guess ~10,000cr)	very rare	Terrestrial water world with an active water-based chemistry and carbon-water-based life.
File:Earthlike.png	Earth-like world	Blue with green, brown and white	~10,000cr	Extremely rare	Outdoor world with a human-breathable atmosphere and indigenous life. The atmosphere is far from chemical equilibrium as a result.
File:Ammonia-World-180px.png	Ammonia world	Light brown	unknown (guess ~10,000cr)	Very rare

Water Giants

Water Giant

• Very rare.
• Color: Blue
• Exploration value: unknown

Gas Giants

Image	Class	Exploration Value (with detailed surface scanner?)	Rarity	In game description
File:Gas-Giant-Class-I.png	I	1,000 - 1,500cr	Rare	Class I or Jovian gas giants have primarily hydrogen and helium atmospheres. Coloration comes from clouds in the upper atmosphere of ammonia, water vapour, hydrogen sulphide, phosphine and sulphur. The temperature at the top of their upper cloud layers is typically less than 150 K.
File:Class II.png	II	5,000cr	Very rare	(There is curently a bug which make the map show the class III gas giant description instead of the class II )
File:Gas-Giant-Class-III-180px.png	III	1,000 - 1,500cr	Rare	Class III gas giants have primarily hydrogen and helium atmospheres without distinctive cloud layers. Their surface temperature typically ranges between 350 K and 800 K. They are primarily blue in colour because of optical scattering in the armosphere - with the chance of wispy cloud layers from sulphides and chlorides.
File:Gas-Giant-Class-IV-180px.png	IV	1,000 - 1,500cr	Rare
File:Gas giant with ammonia based life.png	Gas giant with ammonia-based life	1,000 - 1,500cr ?	Very rare	Gas giant with ammonia-based life. This is primarily a hydrogen and helium-based atmospheric gas giant, but a little below the surface cloud layers,life exists based in the ammonia-cloud layer. The chemistry of this gaseous region is far from equilibrium, with a surprising excess of oxygen and many carbon-based compounds giving it some vivid colours. As with many such gaseous living systems, it is underpinned by vast quantities of free-floating radioplankton - tiny carbon-based algae, each retaining small quantity of liquid ammonia, extracting their energy from the intese radiation flux.
File:Water based life gas giant.png	Gas giant with water-based life.	1,000 - 1,500cr ?	Very rare	Gas giant with water-based life. This is primarily a hydrogen and helium based atmospheric gas giant, but not far below the surface exists life based in the water-cloud layer just below the atmospheric surface. The chemistry of this gaseous region is far from equilibrium, with a surprising excess of oxygen and many carbon-based compounds giving it some vivid colours. As with many such gaseous living systems, it is underpinned by vast quantities of free-floating radioplankton - tiny carbon-based algae, each retaining small quantity of liquid water, extracting their energy from the intese radiation flux.