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The smallest planet in our solar system
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What Is the Weather Like on Other Planets?
Each of the planets in our solar system experiences its own unique weather.
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How Many Moons Does Each Planet Have?
We have one, but some planets have dozens.
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Make a mask and pretend to be your favorite planet in our solar system!
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Gallery of NASA Solar System Images
Glorious planets and moons to view or print.
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How Long Is One Day on Other Planets?
Learn to make a graph with the answer!
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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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Snap it! An Eclipse Photo Adventure
Help the Traveler snap photos of an eclipse!
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The hottest planet in our solar system
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Learn more about the planets in our solar system
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And what can we learn from these space rocks in our solar system?
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The light of daytime comes from our closest star: the Sun. Learn more about it!