Solar System: Planets: Earth

Earth is very well known to everyone, but here is some data about it anyway:

• Diameter of 12756 km
• Density of about 5500 kg/cubic meter
• Average distance to the Sun is 149.6 mil. km (1 AU)
• Orbiting time 365.26 days
• Rotational period 23 hrs. 56 mins.
• Rotational axis tilted 23.5 degrees
• Atmosphere: Nitrogen (78%), Oxygen (21%), Argon (0.9%), Carbon Dioxide (0.03%)
• Permanent polar ice caps, both poles

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