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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.
Universe - General
The Universe is commonly defined as the totality of existence, including planets, stars, galaxies, the contents of intergalactic space, and all matter and energy.
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