planet
This is Earth. It is a body that orbits the sun. It is one of nine planets. |
ring
This is Saturn and its rings. The rings are made of ice and rocks. |
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scientist A scientist is a person who learns about how our world works and what it looks like.
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telescope A telescope is a tool scientists use to look at things far, far away. If you use a telescope, you are a scientist, too! |
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Image Credit: Photographs are courtesy of
JPL/NASA.