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Africa and the Middle East from Apollo
Europe from Space
Planet ProfileMass (kg) 5.98 x 10^24 Diameter (km) 12756 Mean density (kg/m^3) 5520 Escape velocity (m/sec) 11200 Average distance from Sun (AU) 1 Rotation period (length of day in Earth hours) 23.93 Revolution period (length of year in Earth days) 365.26 Obliquity (tilt of axis in degrees) 23.4 Orbit inclination (degrees) 0 Orbit eccentricity (deviation from circular) 0.017 Mean surface temperature (K) 281 Maximum surface temperature (K) 310 Minimum surface temperature (K) 260 Visual geometric albedo (reflectivity) 0.39 Highest point on surface: Mount Everest (over 8 km above sea-level) Atmospheric components: 78% nitrogen, 21% oxygen, 1% argon Surface materials Basaltic and granitic rock and altered materials
11/2011 |
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