Class L planets range in age from 4 to 10 billion years. Their diameters range in size from 10,000 to 15,000 km. They are located in the ecozone region of a star's solar system, and have rocky, barren surfaces with little water. Their atmospheres are oxygen/argon with a high concentration of carbon dioxide. Lifeforms, if any, are limited to plant life. Class L planets are suitable for human colonization with some terraforming.

Class L planetsEdit

External linksEdit

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