Planetary Classifications

Class A - Geothermal

Class B - Geomorteus

Class C - Geoinactive

Class D - Asteriod/Moon

Class E - Geoplastic

Class F - Geometallic

Class G - Geocrystalline

Class H - Desert

Class I - Gas Supergiant

Class J - Gas Giant

Class K - Adaptable

Class L - Marginal

Class M - Terrestrial

Class N - Reducing

Class O - Plegaic

Class P - Glaciated

Class Q - Variable

Class R - Rogue

Class S - Ultragiant

Class T - Ultragiant

Class Y - Demon


Class E - Geoplastic


Age: 0-2 billion years

Diameter: 10,000 - 15,000 km

Location: Ecosphere

Surface: Molten, high surface temperature

Atmosphere: Hydrogen compunds and reactive gases

Evolution: Cools to become Class-F

Life-Forms: Carbon-cycle (Excalbian)

Examples: Excalbia

Class E planets will usually reside in a star's habitable zone. They are comparable to Earth in size, ranging from 10,000 to 15,000 kilometers in diameter. Because they have recently been formed, the surface of a Class E planet is molten, and the atmosphere contains many hydrogen compounds and reactive gases. This combination makes them unsuitable for humanoid life forms. Eventually Class E planets cool to become class F.

Excalbia, the inhospitable volcanic home world of the Excalbians in "The Savage Curtain" (TOS), is Class E. It's surface is molten lava, and the air poisonous to humans.



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