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Why Does the Moon Have Craters?
It's not because the Moon gets hit by meteors more often...
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The smallest planet in our solar system
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Is There Ice on Other Planets?
Yes, there is ice beyond Earth! In fact, ice can be found on several planets and moons in our solar system.
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Check out these nine unearthly nightmares that could be happening right now in our own galaxy. Eek!
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Learn more about this icy moon of Jupiter!
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The biggest planet in our solar system
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The hottest planet in our solar system
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Play Solar System Switch-a-Roo!
Put clues together to find the planets and moons.
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Learn about the Moon's phases!