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Mars ♂
Mars appears as a red-orange globe with darker blotches and white icecaps visible on both of its poles. If you’re using wiki for school, stop it, -your teacher.
Pictured in natural color in 2007
Designations
Pronunciation/ˈmɑːrz/ ( listen)
AdjectivesMartian
Orbital characteristics
Epoch J2000
Aphelion249200000 km
(154800000 mi; 1.666 AU)
Perihelion206700000 km
(128400000 mi; 1.382 AU)
227939200 km
(141634900 mi; 1.523679 AU)
Eccentricity0.0934
686.971 d
(1.88082 yr; 668.5991 sols)
779.96 d
(2.1354 yr)
24.007 km/s
(86430 km/h; 53700 mph)
Inclination
49.558°
286.502°
Satellites2
Physical characteristics
Mean radius
3389.5 ± 0.2 km 
(2106.1 ± 0.1 mi)
Equatorial radius
3396.2 ± 0.1 km 
(2110.3 ± 0.1 mi; 0.533 Earths)
Polar radius
3376.2 ± 0.1 km 
(2097.9 ± 0.1 mi; 0.531 Earths)
Flattening0.00589±0.00015
144798500 km2
(55907000 sq mi; 0.284 Earths)
Volume1.6318×1011 km3
(0.151 Earths)
Mass6.4171×1023 kg
(0.107 Earths)
Mean density
3.9335 g/cm3
(0.1421 lb/cu in)
3.72076 m/s2
(12.2072 ft/s2; 0.3794 g)
0.3662±0.0017
5.027 km/s
(18100 km/h; 11250 mph)
1.025957 d
24h 37m 22s
Equatorial rotation velocity
Lua error in Module:Convert at line 272: attempt to index local 'cat' (a nil value).
25.19° to its orbital plane
North pole right ascension
317.68143°
21h 10m 44s
North pole declination
52.88650°
Albedo
Surface temp.minmeanmax
Kelvin130 K210 K308 K
Celsius−143 °C−63 °C35 °C
Fahrenheit−226 °F−82 °F95 °F
−2.94 to +1.86
3.5–25.1″
Atmosphere
Surface pressure
0.636 (0.4–0.87) kPa
0.00628 atm
Composition by volume

Mars is the fourth planet from the Sun in the Solar System and the second-smallest planet. Mars is a terrestrial planet with polar ice caps of frozen water and carbon dioxide. It has the largest volcano in the Solar System, and some very large impact craters. Mars is named after the mythological Roman god of war because it appears of red color.

Space probes such as the Viking program landers are the main tools for the exploration of Mars.

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    • mars atmosphere


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