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PLANETARY CLASSIFICATION
Class M
Classification:	Terrestrial
Age:	3-10 billion years
Diameter:	10,000-15,000 km
Location:	Ecosphere
Surface:	Surface water abundant, but less than 80%
Atmosphere:	Nitrogen, oxygen, trace elements
Evolution:	None
Lifeforms:	Extensive vegetation, animal life, humanoids
Section through a class M world

The Class M (or Minshara-class) planet is the most stable type for humanoid habitation. Class M planets may feature large areas of water, if water or ice covers more than 80% of surface then the planet is considered Class O or Class P. (ST reference: Star Trek: Star Charts)

The novel Strangers from the Sky indicated that the term "Class M" was used by humans prior to first contact with Vulcans, or indeed before humanity reached any extra-solar planets.

Planets of this type

• Archer IV
• Bajor
• Capella
• Cardassia Prime
• Chin'toka III
• Delestra
• Earth
• Lessenar
• Neural
• Romulus
• Ventax II
• Vulcan

This article is a stub relating to a planet, moon or planetoid. You can help our database by expanding on it.

Connections

• Class M article at Memory Alpha, the wiki for canon Star Trek.
• Class M planet article at Star Trek Expanded Universe, the fanon Star Trek wiki.

The Star Trek Expanded Universe Database is for fanon and related content. See Memory-Alpha.org for the canon Star Trek wiki.

Class M planets range in age from 3 to 10 billion years old. Their diameters range in size from 10,000 to 15,000 km. They are always located in the ecozone region of a star's solar system. Their surfaces are comprised with a relatively thin tectonic layer floating on a molten rock mantle, usually with active volcanoes present. Class M planets have an abundant amount of water necessary for life to exist. Their atmospheres contain oxygen/nitrogen with other trace gases. Life forms are almost always present, flourishing as extensive plant and animal life. Usually a sentient race is also present.

Class M planets are also called Minshara Class, a Vulcan term.

Planets with more than 80% surface water fall under Class O or Class P. (Star Trek: Star Charts)

Class M planets

• Bajor
• Cardassia Prime
• Earth
• Qo'noS
• Rigel VII
• Risa
• Vulcan (40 Eridani A)

For an extensive list of Class M planets, see Category:Class M planets.

External links

• Class M article at Memory Alpha, the canon Star Trek wiki.
• Class M article at Memory Beta, the non-canon Star Trek wiki.

From Wookieepedia, the Star Wars wiki.

A Class M was a planet with an oxygen/nitrogen atmosphere.

Behind the scenes

This is likely a reference to the Class M planet designation from Star Trek.

Appearances

• The Courtship of Princess Leia