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Our Moon
The Moon is Earth's closest neighbor in space. It orbits Earth just like Earth orbits the Sun. The Moon does not make its own light. It reflects light from the Sun, which is why it glows at night! The Moon has no air, no water, and no weather. It is covered with craters, which are big holes made by space rocks that crashed into it long ago. The Moon looks different on different nights. Sometimes it is a full circle (full moon). Sometimes it is a tiny sliver (crescent moon). These shapes are called phases. It takes about 29 days for the Moon to go through all its phases.