Editing Class M

[[Image:Earth_small_172x170px.jpg|thumb|right|Earth is considered the quintessential Class M planet.]]
In [[planetary classification]], a '''Class M''' [[planet]] is a 'Terrestrial' planet.  They have an age that ranges from 3-10 billion years and a diameter between 10,000 and 15,000 km.  They are located within the Ecosphere of a [[solar system]].  A Terrestrial planet is categorized by an abundance of surface [[water]] and an atmosphere high in [[nitrogen]] with [[oxygen]] and trace [[element]]s.  Life is often abundant on Class M planets; they contain extensive vegetation, animal life and often have native [[humanoid]]s.

Examples of Class M planets include: [[Earth|Earth (Sol III)]], [[Vulcan (planet)|Vulcan]], [[Cardassia Prime]], [[Bajor]], [[Romulus]] and [[Qo'noS]].