Meteorite could hold solar clues


	Meteorite could hold solar clues

tabsey

6-22-2008 5:44 AM

76 views

tags:

who, is, throwing, these, rocks, at, us

tabsey says:

The solar system in a 705g rock.

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<div style="margin: 12px 0px; font-family: arial; color: #333333; background: #ffffff; border: solid 4px #e5e5e5; width: 100%; clear: left;"><div class="CM_CTB_Content_Wrap" style="margin: 0px; padding: 0px;background-color: #ffffff;"><div style="border-bottom: solid 1px #dcdcdc; white-space: nowrap; margin-bottom: 8px; background-color: #eeeeee ;background-image: url(http://www.clipmarks.com/images/source-bg.gif); background-repeat: repeat-x; height: 24px; line-height: 24px; vertical-align: middle; padding-bottom: 4px; color: #666666; font-size: 10px;" ><a href="http://clipmarks.com/clip-to-blog/" title="see clips that are hot right now"><img src="http://content.clipmarks.com/blog_embed/4b5f299e-8a37-4993-9857-67d52ab2c16b/9F936003-EB14-4533-9692-312AC5D89393/" alt="" width="19" height="19" border="0" style="vertical-align: middle; margin: 0px 4px; display: inline; border: none; float:none;" /></a>clipped from <a title="http://news.bbc.co.uk/2/hi/science/nature/7464583.stm" href="http://news.bbc.co.uk/2/hi/science/nature/7464583.stm" style="font-size: 11px;">news.bbc.co.uk</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://news.bbc.co.uk/2/hi/science/nature/7464583.stm"><P class="first">
<B>A rare type of meteorite that could hold clues to the birth of our Solar System has been bought by London's Natural History Museum.</B>
</P></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://news.bbc.co.uk/2/hi/science/nature/7464583.stm"><P>
The Ivuna meteorite, obtained from a US private collection, has the same chemical make-up from which the Solar System formed 4.5 billion years ago.
</P></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://news.bbc.co.uk/2/hi/science/nature/7464583.stm"><P>
It landed in Tanzania in 1938 as one 705g stone, since split into samples.
</P></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://news.bbc.co.uk/2/hi/science/nature/7464583.stm"><P>
Pieces from the UK sample, the largest in any public collection in the world, will be removed for study.
</P></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://news.bbc.co.uk/2/hi/science/nature/7464583.stm"><P>
Most Ivuna samples are held in private collections, or by the Tanzanian government.
</P></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://news.bbc.co.uk/2/hi/science/nature/7464583.stm"><DIV class="mva">
			<IMG height="13" border="0" width="24" alt="" src="http://newsimg.bbc.co.uk/nol/shared/img/v3/start_quote_rb.gif" />
			<B>It's a particularly important specimen to science because it's been so well preserved</B>
		<IMG height="13" border="0" align="right" width="23" vspace="0" alt="" src="http://newsimg.bbc.co.uk/nol/shared/img/v3/end_quote_rb.gif" /><BR clear="all" />	</DIV></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://news.bbc.co.uk/2/hi/science/nature/7464583.stm"><P>
Ivuna's chemical make-up, which matches the Sun, is extremely rare - just nine of the 35,000 known meteorites, or 0.03%, have this solar composition.
</P></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://news.bbc.co.uk/2/hi/science/nature/7464583.stm"><P>
Dr Caroline Smith, meteorite curator at the Natural History Museum (NHM), told BBC News: "These types of meteorite are very susceptible to alteration on Earth. Changes in humidity, for example, can change their composition. 
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