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The hottest 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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A transit is when one object in space crosses in front of another object in space. The Moon transits the Sun during an eclipse, but did you know that other objects can transit, too? Learn more in this article.
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Explore the many volcanoes in our solar system using the Space Volcano Explorer.
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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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Glossary for "Sign Here!" words
Defines words in "Sign Here" game.
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How Long Is One Day on Other Planets?
Learn to make a graph with the answer!
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The smallest planet in our solar system
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Pluto is now categorized as a dwarf planet.
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The planet with living things