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				<img alt='~ December 2009 IYA Discovery Guide: <br><b>Discovering New Worlds</b>' src='images/decIYA1-thm1.jpg'>
			  
			  
			  <h3 class='title'>~ December 2009 IYA Discovery Guide: <br><b>Discovering New Worlds</b></h3>
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					Use these IYA Discovery Guides to participate in the excitement of the International Year of Astronomy. December&#39;s theme is <strong>Discovering New Worlds</strong>. Find out how NASA astronomers are finding planets around other stars and what characteristics they are hunting for in search of extraterrestrial life with the activity <strong>What is the &quot;Habitable Zone&quot;?</strong><br /><br /><em>Uploaded: October 2008</em>
				
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