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One Year On Earth
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One Year On Earth
How do we determine a year on Earth? There are a few factors to consider when determining a "calendar" year, including the means of measurement. After this video, you wont look at our annual revolution the same way.


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Rating: 2.8 / 5 (620 votes)
Posted by Tibor on August 23, 2011
Hits: 2180

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Comments

Posted by Tibor on August 30, 2011 at 10:38 pm
The beauty and science of movement is in the details.
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