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	<title>Richard Foote's Oracle Blog</title>
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	<link>http://richardfoote.wordpress.com</link>
	<description>Focusing Specifically On Oracle Indexes, Database Administration and Some Great Music</description>
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		<title>Richard Foote's Oracle Blog</title>
		<link>http://richardfoote.wordpress.com</link>
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			<item>
		<title>Monterey and ODTUG Kaleidoscope 2009 Review</title>
		<link>http://richardfoote.wordpress.com/2009/06/30/monterey-and-odtug-kaleidoscope-2009-review/</link>
		<comments>http://richardfoote.wordpress.com/2009/06/30/monterey-and-odtug-kaleidoscope-2009-review/#comments</comments>
		<pubDate>Tue, 30 Jun 2009 12:06:23 +0000</pubDate>
		<dc:creator>Richard Foote</dc:creator>
				<category><![CDATA[Kaleidoscope]]></category>
		<category><![CDATA[Oracle ACE Director]]></category>
		<category><![CDATA[Richard's Musings]]></category>
		<category><![CDATA[Travel]]></category>

		<guid isPermaLink="false">http://richardfoote.wordpress.com/?p=928</guid>
		<description><![CDATA[I&#8217;ve just recently returned from a really enjoyable trip to the USA to attend an Oracle ACE Director briefing at Redwood Shores and the ODTUG Kaleidoscope Conference in Monterey, CA.
During the week, I had the opportunity to finally meet some of the other Oracle ACE Directors such as Tim Hall, Mark Rittman, Lucus Jellema, Lonneke Dikmans, [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=richardfoote.wordpress.com&blog=2301564&post=928&subd=richardfoote&ref=&feed=1" />]]></description>
		<wfw:commentRss>http://richardfoote.wordpress.com/2009/06/30/monterey-and-odtug-kaleidoscope-2009-review/feed/</wfw:commentRss>
		<slash:comments>9</slash:comments>
	
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			<media:title type="html">Richard Foote</media:title>
		</media:content>

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			<media:title type="html">2009 - Monterey USA 125</media:title>
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			<media:title type="html">2009 - Monterey USA 148</media:title>
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			<media:title type="html">2009 - Monterey USA 072</media:title>
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		<item>
		<title>The CBO and Indexes: Introduction Continues &#8230;</title>
		<link>http://richardfoote.wordpress.com/2009/06/15/the-cbo-and-indexes-introduction-continues/</link>
		<comments>http://richardfoote.wordpress.com/2009/06/15/the-cbo-and-indexes-introduction-continues/#comments</comments>
		<pubDate>Mon, 15 Jun 2009 12:03:30 +0000</pubDate>
		<dc:creator>Richard Foote</dc:creator>
				<category><![CDATA[CBO]]></category>
		<category><![CDATA[Oracle Indexes]]></category>

		<guid isPermaLink="false">http://richardfoote.wordpress.com/?p=916</guid>
		<description><![CDATA[OK, I previously briefly covered how the CBO calculates the basic cost of an index range scan. Yes, those cardinality/rows values in the execution plans are vitally important as they highlight whether or not the CBO has used the appropriate selectivity values in the index costing formula. And yes, the associated cost values are meaningful [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=richardfoote.wordpress.com&blog=2301564&post=916&subd=richardfoote&ref=&feed=1" />]]></description>
		<wfw:commentRss>http://richardfoote.wordpress.com/2009/06/15/the-cbo-and-indexes-introduction-continues/feed/</wfw:commentRss>
		<slash:comments>9</slash:comments>
	
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			<media:title type="html">Richard Foote</media:title>
		</media:content>
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		<item>
		<title>Radiohead &#8220;In-Rainbows&#8221; Disk 2 Available For Digital Download</title>
		<link>http://richardfoote.wordpress.com/2009/06/13/radiohead-in-rainbows-disk-2-available-for-digital-download/</link>
		<comments>http://richardfoote.wordpress.com/2009/06/13/radiohead-in-rainbows-disk-2-available-for-digital-download/#comments</comments>
		<pubDate>Fri, 12 Jun 2009 14:09:48 +0000</pubDate>
		<dc:creator>Richard Foote</dc:creator>
				<category><![CDATA[Music]]></category>
		<category><![CDATA[Radiohead]]></category>

		<guid isPermaLink="false">http://richardfoote.wordpress.com/?p=914</guid>
		<description><![CDATA[For all the Radiohead fans out there, some exciting news.
They&#8217;ve just announced that their &#8220;In Rainbows&#8221; Disk 2, which was previously only available with the limited edition &#8221;In Rainbows&#8221; Box-Set, is now available for digital download from their w.a.s.t.e site.
I wrote a piece on the Radiohead &#8220;In Rainbows&#8221; Box-Set a while ago when it was first released, where [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=richardfoote.wordpress.com&blog=2301564&post=914&subd=richardfoote&ref=&feed=1" />]]></description>
		<wfw:commentRss>http://richardfoote.wordpress.com/2009/06/13/radiohead-in-rainbows-disk-2-available-for-digital-download/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
	
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			<media:title type="html">Richard Foote</media:title>
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	</item>
		<item>
		<title>Dunning-Kruger Effect (The Idiot)</title>
		<link>http://richardfoote.wordpress.com/2009/06/11/dunning-kruger-effect-the-idiot/</link>
		<comments>http://richardfoote.wordpress.com/2009/06/11/dunning-kruger-effect-the-idiot/#comments</comments>
		<pubDate>Thu, 11 Jun 2009 12:48:18 +0000</pubDate>
		<dc:creator>Richard Foote</dc:creator>
				<category><![CDATA[Richard's Musings]]></category>

		<guid isPermaLink="false">http://richardfoote.wordpress.com/?p=910</guid>
		<description><![CDATA[In an interesting blog piece by Martin Widlake regarding his annoyance at just how unhelpful some people can unfortunately be in forums, Jonathan Lewis has a really interesting comment regarding the Dunning-Kruger Effect.
I&#8217;ve never heard of it before, but it&#8217;s really all quite fascinating. In short, the Dunning-Kruger Effect is when someone keeps making mistakes or coming to wrong [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=richardfoote.wordpress.com&blog=2301564&post=910&subd=richardfoote&ref=&feed=1" />]]></description>
		<wfw:commentRss>http://richardfoote.wordpress.com/2009/06/11/dunning-kruger-effect-the-idiot/feed/</wfw:commentRss>
		<slash:comments>8</slash:comments>
	
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			<media:title type="html">Richard Foote</media:title>
		</media:content>
	</item>
		<item>
		<title>The CBO and Indexes: An Introduction (Absolute Beginners)</title>
		<link>http://richardfoote.wordpress.com/2009/06/09/the-cbo-and-indexes-an-introduction-absolute-beginners/</link>
		<comments>http://richardfoote.wordpress.com/2009/06/09/the-cbo-and-indexes-an-introduction-absolute-beginners/#comments</comments>
		<pubDate>Tue, 09 Jun 2009 12:59:31 +0000</pubDate>
		<dc:creator>Richard Foote</dc:creator>
				<category><![CDATA[CBO]]></category>
		<category><![CDATA[Oracle Indexes]]></category>

		<guid isPermaLink="false">http://richardfoote.wordpress.com/?p=857</guid>
		<description><![CDATA[One of the more common questions I get asked and one of the most common questions asked in the various Oracle related forums is the general question of why doesn&#8217;t the CBO choose to use a particular index. There are various reasons why an index might be ignored but generally and rather simplistically (for now), the [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=richardfoote.wordpress.com&blog=2301564&post=857&subd=richardfoote&ref=&feed=1" />]]></description>
		<wfw:commentRss>http://richardfoote.wordpress.com/2009/06/09/the-cbo-and-indexes-an-introduction-absolute-beginners/feed/</wfw:commentRss>
		<slash:comments>11</slash:comments>
	
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			<media:title type="html">Richard Foote</media:title>
		</media:content>
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		<item>
		<title>Indexes And Small tables Part VII (Cluster One)</title>
		<link>http://richardfoote.wordpress.com/2009/05/27/indexes-and-small-tables-part-vii-cluster-one/</link>
		<comments>http://richardfoote.wordpress.com/2009/05/27/indexes-and-small-tables-part-vii-cluster-one/#comments</comments>
		<pubDate>Tue, 26 May 2009 14:13:09 +0000</pubDate>
		<dc:creator>Richard Foote</dc:creator>
				<category><![CDATA[Index Organized Tables]]></category>
		<category><![CDATA[Oracle Indexes]]></category>
		<category><![CDATA[Small Indexes]]></category>

		<guid isPermaLink="false">http://richardfoote.wordpress.com/?p=825</guid>
		<description><![CDATA[OK, almost getting to the end here  
As discussed previously, despite popular opinion, an index can be just that little bit more efficient than a FTS when accessing very small tables, even if  all rows in the table exist in the one table block. And a small efficiency multiplied by a large number can potentially add up and make [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=richardfoote.wordpress.com&blog=2301564&post=825&subd=richardfoote&ref=&feed=1" />]]></description>
		<wfw:commentRss>http://richardfoote.wordpress.com/2009/05/27/indexes-and-small-tables-part-vii-cluster-one/feed/</wfw:commentRss>
		<slash:comments>14</slash:comments>
	
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			<media:title type="html">Richard Foote</media:title>
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		<title>Two Excellent Index Related Blog Posts</title>
		<link>http://richardfoote.wordpress.com/2009/05/25/two-excellent-index-related-blog-posts/</link>
		<comments>http://richardfoote.wordpress.com/2009/05/25/two-excellent-index-related-blog-posts/#comments</comments>
		<pubDate>Mon, 25 May 2009 11:15:05 +0000</pubDate>
		<dc:creator>Richard Foote</dc:creator>
				<category><![CDATA[Oracle Indexes]]></category>

		<guid isPermaLink="false">http://richardfoote.wordpress.com/?p=809</guid>
		<description><![CDATA[Before I sit down and write something new, thought I might quickly mention two excellent recent index related blog posts,written by two very clever chaps.
The first is by Jonathan Lewis who discusses in a post called Index Size how one might determine which indexes to perhaps consider for an index rebuild by using the dbms_space.create index_cost procedure.  By comparing [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=richardfoote.wordpress.com&blog=2301564&post=809&subd=richardfoote&ref=&feed=1" />]]></description>
		<wfw:commentRss>http://richardfoote.wordpress.com/2009/05/25/two-excellent-index-related-blog-posts/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
	
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			<media:title type="html">Richard Foote</media:title>
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		<item>
		<title>Indexes And Small Tables Part VI (Loaded)</title>
		<link>http://richardfoote.wordpress.com/2009/05/19/indexes-and-small-tables-part-vi-loaded/</link>
		<comments>http://richardfoote.wordpress.com/2009/05/19/indexes-and-small-tables-part-vi-loaded/#comments</comments>
		<pubDate>Mon, 18 May 2009 14:07:40 +0000</pubDate>
		<dc:creator>Richard Foote</dc:creator>
				<category><![CDATA[Constraints]]></category>
		<category><![CDATA[Oracle Indexes]]></category>
		<category><![CDATA[Small Indexes]]></category>
		<category><![CDATA[Unique Indexes]]></category>

		<guid isPermaLink="false">http://richardfoote.wordpress.com/?p=804</guid>
		<description><![CDATA[Thanks to comments by PdV, I need yet another Part before I can look at completing this series  
OK, we&#8217;ve reached the stage in Part V of accessing this small, one block table with a Unique Index. This has reduced the number of consistent gets to 2, with both consistent get operations being the &#8220;pinless&#8221;, one latch [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=richardfoote.wordpress.com&blog=2301564&post=804&subd=richardfoote&ref=&feed=1" />]]></description>
		<wfw:commentRss>http://richardfoote.wordpress.com/2009/05/19/indexes-and-small-tables-part-vi-loaded/feed/</wfw:commentRss>
		<slash:comments>7</slash:comments>
	
		<media:content url="http://0.gravatar.com/avatar/6a78e8fa60b2eb46aa9c3c32c77a5af3?s=96&#38;d=identicon&#38;r=G" medium="image">
			<media:title type="html">Richard Foote</media:title>
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		<item>
		<title>Indexes And Small Tables Part V (It&#8217;s No Game)</title>
		<link>http://richardfoote.wordpress.com/2009/05/13/indexes-and-small-tables-part-v-its-no-game/</link>
		<comments>http://richardfoote.wordpress.com/2009/05/13/indexes-and-small-tables-part-v-its-no-game/#comments</comments>
		<pubDate>Wed, 13 May 2009 11:36:52 +0000</pubDate>
		<dc:creator>Richard Foote</dc:creator>
				<category><![CDATA[Index Internals]]></category>
		<category><![CDATA[Oracle Indexes]]></category>
		<category><![CDATA[Small Indexes]]></category>
		<category><![CDATA[Unique Indexes]]></category>

		<guid isPermaLink="false">http://richardfoote.wordpress.com/?p=795</guid>
		<description><![CDATA[So far in our little example, we&#8217;ve looked at how accessing a row of a one block table via a FTS required 4 consistent gets while accessing this same table via a Non-unique index reduced the consistent gets down to 3.
Time to take the next step and improve the efficiency yet further of accessing this [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=richardfoote.wordpress.com&blog=2301564&post=795&subd=richardfoote&ref=&feed=1" />]]></description>
		<wfw:commentRss>http://richardfoote.wordpress.com/2009/05/13/indexes-and-small-tables-part-v-its-no-game/feed/</wfw:commentRss>
		<slash:comments>10</slash:comments>
	
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			<media:title type="html">Richard Foote</media:title>
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		<title>Indexes And Small Tables Part IV (Treefingers)</title>
		<link>http://richardfoote.wordpress.com/2009/05/05/indexes-and-small-tables-part-iv-treefingers/</link>
		<comments>http://richardfoote.wordpress.com/2009/05/05/indexes-and-small-tables-part-iv-treefingers/#comments</comments>
		<pubDate>Mon, 04 May 2009 13:33:26 +0000</pubDate>
		<dc:creator>Richard Foote</dc:creator>
				<category><![CDATA[Index Block Splits]]></category>
		<category><![CDATA[Index Internals]]></category>
		<category><![CDATA[Oracle Indexes]]></category>
		<category><![CDATA[Root Index Block]]></category>
		<category><![CDATA[Small Indexes]]></category>

		<guid isPermaLink="false">http://richardfoote.wordpress.com/?p=778</guid>
		<description><![CDATA[As I asked in my previous post, the key question when comparing the associated costs of accessing a small table via a Full Table Scan (FTS) vs. an index scan is why does Oracle visit the segment header during a FTS but not during an index scan ?
The answer all comes down to understanding why Oracle must visit [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=richardfoote.wordpress.com&blog=2301564&post=778&subd=richardfoote&ref=&feed=1" />]]></description>
		<wfw:commentRss>http://richardfoote.wordpress.com/2009/05/05/indexes-and-small-tables-part-iv-treefingers/feed/</wfw:commentRss>
		<slash:comments>13</slash:comments>
	
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			<media:title type="html">Richard Foote</media:title>
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		<title>Indexes On Small Tables Part III (Another Brick In The Wall Part III)</title>
		<link>http://richardfoote.wordpress.com/2009/04/29/indexes-on-small-tables-part-iii-another-brick-in-the-wall-part-iii/</link>
		<comments>http://richardfoote.wordpress.com/2009/04/29/indexes-on-small-tables-part-iii-another-brick-in-the-wall-part-iii/#comments</comments>
		<pubDate>Wed, 29 Apr 2009 11:50:46 +0000</pubDate>
		<dc:creator>Richard Foote</dc:creator>
				<category><![CDATA[Non-Unique Indexes]]></category>
		<category><![CDATA[Oracle Indexes]]></category>
		<category><![CDATA[Small Indexes]]></category>

		<guid isPermaLink="false">http://richardfoote.wordpress.com/?p=764</guid>
		<description><![CDATA[So far, in Part I and Part II of this little series, we&#8217;ve looked at how Oracle performs a Full Table Scan (FTS) when accessing a small table. With very small tables, Oracle needs to still access the table segment header and perform a number of fetch operations, even if the table is as small [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=richardfoote.wordpress.com&blog=2301564&post=764&subd=richardfoote&ref=&feed=1" />]]></description>
		<wfw:commentRss>http://richardfoote.wordpress.com/2009/04/29/indexes-on-small-tables-part-iii-another-brick-in-the-wall-part-iii/feed/</wfw:commentRss>
		<slash:comments>7</slash:comments>
	
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			<media:title type="html">Richard Foote</media:title>
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		<title>AUSOUG 3 ACEs Database Education Day &#8211; Perth 11th May 2009</title>
		<link>http://richardfoote.wordpress.com/2009/04/28/ausoug-3-aces-database-education-day-perth-11th-may-2009/</link>
		<comments>http://richardfoote.wordpress.com/2009/04/28/ausoug-3-aces-database-education-day-perth-11th-may-2009/#comments</comments>
		<pubDate>Tue, 28 Apr 2009 10:57:07 +0000</pubDate>
		<dc:creator>Richard Foote</dc:creator>
				<category><![CDATA[Richard Presentations]]></category>
		<category><![CDATA[Richard's Musings]]></category>

		<guid isPermaLink="false">http://richardfoote.wordpress.com/?p=739</guid>
		<description><![CDATA[Just a short note to say I&#8217;ll be presenting a 3 hour morning session on all things Oracle indexes at the 3 ACEs Database Education Day in Perth, Australia on 11th May 2009, presented by the Australian Oracle User Group.
Also presenting will be the rather clever Conner McDonald on an &#8220;Introduction To RAC&#8221; and the also [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=richardfoote.wordpress.com&blog=2301564&post=739&subd=richardfoote&ref=&feed=1" />]]></description>
		<wfw:commentRss>http://richardfoote.wordpress.com/2009/04/28/ausoug-3-aces-database-education-day-perth-11th-may-2009/feed/</wfw:commentRss>
		<slash:comments>2</slash:comments>
	
		<media:content url="http://0.gravatar.com/avatar/6a78e8fa60b2eb46aa9c3c32c77a5af3?s=96&#38;d=identicon&#38;r=G" medium="image">
			<media:title type="html">Richard Foote</media:title>
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		<title>Indexes On Small Tables Part II (The Mysteries)</title>
		<link>http://richardfoote.wordpress.com/2009/04/24/indexes-on-small-tables-part-ii-the-mysteries/</link>
		<comments>http://richardfoote.wordpress.com/2009/04/24/indexes-on-small-tables-part-ii-the-mysteries/#comments</comments>
		<pubDate>Fri, 24 Apr 2009 11:50:14 +0000</pubDate>
		<dc:creator>Richard Foote</dc:creator>
				<category><![CDATA[Oracle Indexes]]></category>
		<category><![CDATA[Small Indexes]]></category>

		<guid isPermaLink="false">http://richardfoote.wordpress.com/?p=717</guid>
		<description><![CDATA[I&#8217;m a bit pushed for time at the moment but I thought I might quickly just expand a little on the observations in Part I of this no doubt soon to be epic series (there&#8217;s at least another 3 parts to come) !!
In Part I we saw how even with a tiny table that consists of just one [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=richardfoote.wordpress.com&blog=2301564&post=717&subd=richardfoote&ref=&feed=1" />]]></description>
		<wfw:commentRss>http://richardfoote.wordpress.com/2009/04/24/indexes-on-small-tables-part-ii-the-mysteries/feed/</wfw:commentRss>
		<slash:comments>12</slash:comments>
	
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			<media:title type="html">Richard Foote</media:title>
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		<title>Indexes On Small Tables Part I (One Of The Few)</title>
		<link>http://richardfoote.wordpress.com/2009/04/16/indexes-on-small-tables-part-i-one-of-the-few/</link>
		<comments>http://richardfoote.wordpress.com/2009/04/16/indexes-on-small-tables-part-i-one-of-the-few/#comments</comments>
		<pubDate>Wed, 15 Apr 2009 14:21:01 +0000</pubDate>
		<dc:creator>Richard Foote</dc:creator>
				<category><![CDATA[Oracle Indexes]]></category>
		<category><![CDATA[Small Indexes]]></category>

		<guid isPermaLink="false">http://richardfoote.wordpress.com/?p=703</guid>
		<description><![CDATA[A common question I get asked is when is a table too small to benefit from being indexed.
If a table only has a few blocks for example, which could all be potentially read via a single multiblock read operation, surely there&#8217;s no benefit in indexing such a table (except perhaps to police an associated PK [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=richardfoote.wordpress.com&blog=2301564&post=703&subd=richardfoote&ref=&feed=1" />]]></description>
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		<slash:comments>17</slash:comments>
	
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			<media:title type="html">Richard Foote</media:title>
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		<title>Australia Enters The Space Race !! (Life On Mars)</title>
		<link>http://richardfoote.wordpress.com/2009/04/01/australia-enters-the-space-race-life-on-mars/</link>
		<comments>http://richardfoote.wordpress.com/2009/04/01/australia-enters-the-space-race-life-on-mars/#comments</comments>
		<pubDate>Tue, 31 Mar 2009 13:27:13 +0000</pubDate>
		<dc:creator>Richard Foote</dc:creator>
				<category><![CDATA[Richard's Musings]]></category>

		<guid isPermaLink="false">http://richardfoote.wordpress.com/?p=688</guid>
		<description><![CDATA[Just had to share this incredible news. Makes one proud to be an Australian today !!
&#8220;Australia today announced the truly exciting news that starting 2010, it will begin its own space program with the ultimate aim of potentially collonising the planet Mars. This will be the first time a country has specifically stated its intention to lay claims to a territory outside [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=richardfoote.wordpress.com&blog=2301564&post=688&subd=richardfoote&ref=&feed=1" />]]></description>
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		<slash:comments>8</slash:comments>
	
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			<media:title type="html">Richard Foote</media:title>
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