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[null,null,"Mars           Earth     Ratio (Mars/Earth"]
[1,"Mass (1024 kg)",64.185,597.36,0.107]
[2,"Volume (1010 km3)",16.318,108.321,0.151]
[3,"Equatorial radius (km)",3397,6378.1,0.533]
[4,"Polar radius (km)",3375,6356.8,0.531]
[5,"Volumetric mean radius (km)",3390,6371,0.532]
[6,"Core radius (km)",1700,3485,0.488]
[7,"Mean density (kg/m3)",3933,5515,0.713]
[8,"Surface gravity (m/s2)",369,978,0.377]
[9,"Escape velocity (km/s)",500.03,1119,0.45]
[10,"Solar irradiance (W/m2)",589.2,1367.6,0.431]
[11,"Black-body temperature (K)",210.1,254.3,0.826]
[12,"Topographic range (km) ",300,200,1.5]

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