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The Solar System consists of the Sun and its planetary system of eight planets, their moons, and other non-stellar objects. It formed 4.6 billion years ago.
The Moon is the only natural satellite of the Earth, and the fifth largest satellite in the Solar System.
World - Water surface
Earth is called the "Blue Planet" because about 70% of the surface is covered by water.
World - Land Surface
Earth has a total surface area of 196,800,000 square miles. Approximately 57,300,000 square miles, or 29% of the total surface area is land (consists of mountains, deserts, plains, plateaus,...).
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