Class L planet

Class L planets is a planetary classification used to describe planets that are marginally able to support life. 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. Life is usually confined to plant life, though they can be made suitable for human colonisation with some terraforming.
==Class L planets==
*List of class L planets
==References==
Category:Astronomical objects