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The Astrolabe can make a difference by getting new ways figured out. How to use and Astrolabe:

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Tom Wujec: Learn to use the 13th-century astrolabe

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Rather than demo another new technology, Tom Wujec reaches back to one of our earliest but most ingenious devices -- the astrolabe. With thousands of uses, from telling time to mapping the night sky, this old tech reminds us that the ancient can be as brilliant as the brand-new.

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They were placed on ships to help find a path. Without this, some places you live wouldn't be discovered.

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Helped find stars in the sky which solved problems between others.

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Helped people discover things that makes up what today is.

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They allow you to find new routes!