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	<title>Astro Guyz &#187; geological activity</title>
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		<title>10.10.09: An Active Mercury?</title>
		<link>http://astroguyz.com/2009/10/10/10-10-09-an-active-mercury/</link>
		<comments>http://astroguyz.com/2009/10/10/10-10-09-an-active-mercury/#comments</comments>
		<pubDate>Sat, 10 Oct 2009 00:01:22 +0000</pubDate>
		<dc:creator>David Dickinson</dc:creator>
				<category><![CDATA[Astro News]]></category>
		<category><![CDATA[Astro News & Commentary]]></category>
		<category><![CDATA[2011]]></category>
		<category><![CDATA[crater]]></category>
		<category><![CDATA[exo-planet]]></category>
		<category><![CDATA[exosphere]]></category>
		<category><![CDATA[flyby]]></category>
		<category><![CDATA[geological activity]]></category>
		<category><![CDATA[happy crater]]></category>
		<category><![CDATA[johns hopkins]]></category>
		<category><![CDATA[magnesium]]></category>
		<category><![CDATA[magnetic field]]></category>
		<category><![CDATA[messenger]]></category>
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An atmosphere. Magnetosphere. Signs of recent geological activity&#8230;is it Mars? Europa? Some far off exo-planet? Nope&#8230;its none other than Mercury, a visual twin of our own Moon and long thought of as just as inactive. The past three flybys of NASA&#8217;s Messenger spacecraft have revealed a world of dynamic activity. First, there is Mercury&#8217;s on-again, [...]]]></description>
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