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Printable posters, lithographs, postcards, and bookmarks.
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Learn all about comets!
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What causes them?
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Could they have brought the water to our planet?
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A comet close to home
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Asteroid or Meteor: What's the Difference?
Learn more about asteroids, meteors, meteoroids, meteorites, and comets!
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The icy bits past Neptune’s orbit
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Where Does the Solar System End?
The Oort Cloud!
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Where Does the Sun's Energy Come From?
Space Place in a Snap answers this important question!
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How Did the Solar System Form?
The story starts about 4.6 billion years ago, with a cloud of stellar dust.
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The light of daytime comes from our closest star: the Sun. Learn more about it!
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Why collide with a comet?