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Mercury is the smallest planet in our solar system. It’s just a little bigger than Earth’s moon. It is the closest planet to the sun, but it’s actually not the hottest. Venus is hotter.
Along with Venus, Earth, and Mars, Mercury is one of the rocky planets. It has a solid surface that is covered with craters. It has a thin atmosphere, and it doesn’t have any moons. Mercury ...

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[video=youtube;XFXEhb-FHZc]http://www.youtube.com/watch?v=XFXEhb-FHZc&feature=share&list=PLfQSN9FlyB6RumUTLuDAGY3m6 YpBLHSsw&index=5[/video]

[video=youtube_share;TQmz6Rbpnu0]http://youtu.be/TQmz6Rbpnu0[/video]