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		<title>Un trio di stelle morenti</title>
		<link>https://gak.it/6820/un-trio-di-stelle-morenti/</link>
		<comments>https://gak.it/6820/un-trio-di-stelle-morenti/#respond</comments>
		<pubDate>Thu, 31 Oct 2013 08:10:43 +0000</pubDate>
		<dc:creator>Gian Luigi Somma</dc:creator>
				<category><![CDATA[Astronomia]]></category>
		<category><![CDATA[Cranium Nebula]]></category>
		<category><![CDATA[Ghost of Jupiter Nebula]]></category>
		<category><![CDATA[Little Dumbbell Nebula]]></category>
		<category><![CDATA[nebulose planetarie]]></category>
		<category><![CDATA[NGC 3242]]></category>
		<category><![CDATA[NGC 650]]></category>
		<category><![CDATA[PMR 1]]></category>
		<category><![CDATA[Spitzer]]></category>
		<category><![CDATA[telescopio]]></category>

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		<description><![CDATA[<p>In occasione di Halloween, la NASA ha rilasciato tre immagini di nebulose planetarie riprese nell&#8217;infrarosso dallo Spitzer Space Telescope. Le nebulose planetarie rappresentano le ultime tappe dell&#8217;evoluzione stellare (almeno per stelle simili al Sole). In esse gli strati esterni di &#8230; <a href="https://gak.it/6820/un-trio-di-stelle-morenti/">Continua a leggere<span class="meta-nav">&#8594;</span></a></p>
The post <a href="https://gak.it/6820/un-trio-di-stelle-morenti/">Un trio di stelle morenti</a> first appeared on <a href="https://gak.it">GAK.it</a>.]]></description>

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		<title>Le nebulose planetarie</title>
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		<comments>https://gak.it/astronomia/nebulose-planetarie/#respond</comments>
		<pubDate>Fri, 25 Oct 2013 19:04:14 +0000</pubDate>
		<dc:creator>Gian Luigi Somma</dc:creator>
				<category><![CDATA[evoluzione stellare]]></category>
		<category><![CDATA[gas]]></category>
		<category><![CDATA[nebulose]]></category>
		<category><![CDATA[nebulose planetarie]]></category>
		<category><![CDATA[pianeti]]></category>

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		<description><![CDATA[<p>Le nebulose planetarie rappresentano le ultime tappe dell&#8217;evoluzione stellare (almeno per stelle simili al Sole). In esse gli strati esterni di gas sono illuminati dalla luce ultravioletta prodotta dalla debole stella centrale che li ha espulsi. In realtà il termine &#8230; <a href="https://gak.it/astronomia/nebulose-planetarie/">Continua a leggere<span class="meta-nav">&#8594;</span></a></p>
The post <a href="https://gak.it/astronomia/nebulose-planetarie/">Le nebulose planetarie</a> first appeared on <a href="https://gak.it">GAK.it</a>.]]></description>

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