Earth

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================================================================================================================ From Krispedia, the Crack encyclopedia
 * [[image:http://upload.wikimedia.org/wikipedia/commons/9/97/The_Earth_seen_from_Apollo_17.jpg width="420" height="407"]] ||
 * = Earth look from Space ||


 * ==**__Contents__**==

9.What don’t we know?
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**Orbital Period**
=**History**=
 * The Orbital Period**



**What don’t we know?**

 * Link:**
 * Link:**