Canon

Mars

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 There is more information available on this subject at Mars on the English Wikipedia.
Mars
An illustration of Mars.
Astrographical

System:

Sol system[1][2][3]

Orbiting:

Sol[1][2][3]

Orbital position:

Fourth planet[1][2][3]

Moon(s):

Two; Phobos, Deimos[1]

Physical

Diameter:

6,792 kilometres (4,220 mi)[1]

Gravity:

0.376 G[1]

Length of day:

24 hours, 39 minutes, 35 seconds[1]

Length of year:

668.6 days[1]

Atmosphere:

0.7 (CO2, N2, O2)[1]

Surface temperature:

-84°C to 26°C (-120°F to 80°F)[1]

Societal

Demonym:

Martian,[1] Marsman (rare)[4]

Species:

Human

Colonized:

2080[1]

Government:

 

"Time on Mars tends to give a man... perspective."
— Edward Buck, referring to Taylor H. Miles.[5]

Mars is the fourth planet of the Sol system, and one of four terrestrial worlds. One of the first human interplanetary colonies,[6] Mars is a major industrial center and one of the largest in the Sol system.[1] Mars is home to the UNSC Navy's primary shipyards in the post-war period,[7] and is the headquarters for the Orbital Drop Shock Troopers.[1][8]

Overview[edit]

Nomenclature[edit]

Mars is referred to with the technical name of Sol IV.[9] A nickname for it was the Red Planet.[10] During the Forerunner era it was known as Edom.[11]

Topography[edit]

Terraforming has transformed the surface of Mars from a former barren and uninhabitable environment into an Earth-like world.[12] This process took centuries.[2][3]

Locations[edit]