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The Earth
The Earth is made mostly of {rock}. It has both liquid and {frozen} water on its surface. Earth is surrounded by an atmosphere of {gases}. The Earth {rotates}, or spins, once every 24 hours.
The Moon is a {satellite} of Earth. It {orbits}, or goes around, the Earth once about {27} days. The Moon is also made of rock. It does not have an {atmosphere}. The Moon rotates once every time it orbits around the {Earth}. This means that from Earth we only ever see one side of the Moon.
The Earth and Moon system orbits around the {Sun}. The Sun is a {star}. It is made of hot, glowing gases and {plasma}. It is at the center of our {solar} system. All of the {planets} orbit around it.