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	<title>Comments on: AAS odds and ends</title>
	<atom:link href="http://blogs.discovermagazine.com/badastronomy/2008/06/02/aas-odds-and-ends/feed/" rel="self" type="application/rss+xml" />
	<link>http://blogs.discovermagazine.com/badastronomy/2008/06/02/aas-odds-and-ends/</link>
	<description>I am an astronomer, writer, and skeptic. I likes reality the way it is, and I aims to keep it that way. My real name is Phil Plait, and I run the Bad Astronomy blog.</description>
	<lastBuildDate>Tue, 14 Feb 2012 11:14:14 +0000</lastBuildDate>
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		<title>By: MandyDax</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2008/06/02/aas-odds-and-ends/comment-page-1/#comment-93444</link>
		<dc:creator>MandyDax</dc:creator>
		<pubDate>Mon, 02 Jun 2008 22:18:32 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2008/06/02/aas-odds-and-ends/#comment-93444</guid>
		<description>Did you see the &quot;footprint&quot; dubbed &quot;Yeti&quot;?  The Phoenix&#039;s scoop just touched the ground before they tried digging, and the impression looks like a footprint.  There was an article over at Universe Today about it. I saw the footprint and thought, &quot;Phil&#039;s gonna have has hands full with this one.&quot; XD

PS: Where the BA&#039;s book has been. Well, it wasn&#039;t at Large Chain Bookstore cum Coffeeshop, but it is in transit to me.</description>
		<content:encoded><![CDATA[<p>Did you see the &#8220;footprint&#8221; dubbed &#8220;Yeti&#8221;?  The Phoenix&#8217;s scoop just touched the ground before they tried digging, and the impression looks like a footprint.  There was an article over at Universe Today about it. I saw the footprint and thought, &#8220;Phil&#8217;s gonna have has hands full with this one.&#8221; XD</p>
<p>PS: Where the BA&#8217;s book has been. Well, it wasn&#8217;t at Large Chain Bookstore cum Coffeeshop, but it is in transit to me.</p>
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		<title>By: blf</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2008/06/02/aas-odds-and-ends/comment-page-1/#comment-93443</link>
		<dc:creator>blf</dc:creator>
		<pubDate>Mon, 02 Jun 2008 20:35:07 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2008/06/02/aas-odds-and-ends/#comment-93443</guid>
		<description>Torbjörn, my (admittedly superficial) understanding of the reason for the unsual LED colour imaging scheme is it&#039;s intended (mostly) for use &lt;em&gt;inside&lt;/em&gt; the trench, where the ambient light will be much dimmer.  Yes, it doesn&#039;t work so well on the surface, but as the arm digs down&#8230;</description>
		<content:encoded><![CDATA[<p>Torbjörn, my (admittedly superficial) understanding of the reason for the unsual LED colour imaging scheme is it&#8217;s intended (mostly) for use <em>inside</em> the trench, where the ambient light will be much dimmer.  Yes, it doesn&#8217;t work so well on the surface, but as the arm digs down&hellip;</p>
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		<title>By: Torbjörn Larsson, OM</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2008/06/02/aas-odds-and-ends/comment-page-1/#comment-93442</link>
		<dc:creator>Torbjörn Larsson, OM</dc:creator>
		<pubDate>Mon, 02 Jun 2008 16:14:34 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2008/06/02/aas-odds-and-ends/#comment-93442</guid>
		<description>Yay, probably ice, and if so &lt;a href=&quot;http://planetary.s3.amazonaws.com/phoenix/lg_1348.jpg&quot; rel=&quot;nofollow&quot;&gt;it looks like the Snow Queen has melted and the slop refilled a crack&lt;/a&gt;.

The reflectance makes this a tempting hypotheses, but I couldn&#039;t believe the cheap way color information is provided or rather unfortunately not in this case, see Lakdawalla&#039;s blog. What has the lidar that those puny LEDs doesn&#039;t have, apart from no interest in specific color bands reflected?

[Actually, good for NASA that they find ways to cut some corners. But too bad when things gets interesting.]

&lt;blockquote&gt;
The bricks getting blown out I understand, the buckled concrete is a little strange though.
&lt;/blockquote&gt;

Looks like brick like concrete that is cracked and blown out. As it is likely reinforced, it can probably crack and bend on the iron during stress, and that could be part of what happened to those larger bricks.

&lt;blockquote&gt;
The rovers are way more interesting when they stop and find things or travel huge distances to check other sites.
&lt;/blockquote&gt;

AFAIU the idea is that the probes, besides being in principle cheaper and less likely to fail et cetera, can land on places where the rovers can&#039;t traverse to. Presumably this is one such place, despite the locally flat geography.

I believe NASA likes a half-and-half, each time doing an alternate type of mission.

&lt;blockquote&gt;
“what you in”
&lt;/blockquote&gt;

Blogging ... *sigh*, not professionally, no.</description>
		<content:encoded><![CDATA[<p>Yay, probably ice, and if so <a href="http://planetary.s3.amazonaws.com/phoenix/lg_1348.jpg" rel="nofollow">it looks like the Snow Queen has melted and the slop refilled a crack</a>.</p>
<p>The reflectance makes this a tempting hypotheses, but I couldn&#8217;t believe the cheap way color information is provided or rather unfortunately not in this case, see Lakdawalla&#8217;s blog. What has the lidar that those puny LEDs doesn&#8217;t have, apart from no interest in specific color bands reflected?</p>
<p>[Actually, good for NASA that they find ways to cut some corners. But too bad when things gets interesting.]</p>
<blockquote><p>
The bricks getting blown out I understand, the buckled concrete is a little strange though.
</p></blockquote>
<p>Looks like brick like concrete that is cracked and blown out. As it is likely reinforced, it can probably crack and bend on the iron during stress, and that could be part of what happened to those larger bricks.</p>
<blockquote><p>
The rovers are way more interesting when they stop and find things or travel huge distances to check other sites.
</p></blockquote>
<p>AFAIU the idea is that the probes, besides being in principle cheaper and less likely to fail et cetera, can land on places where the rovers can&#8217;t traverse to. Presumably this is one such place, despite the locally flat geography.</p>
<p>I believe NASA likes a half-and-half, each time doing an alternate type of mission.</p>
<blockquote><p>
“what you in”
</p></blockquote>
<p>Blogging &#8230; *sigh*, not professionally, no.</p>
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		<title>By: Evolving Squid</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2008/06/02/aas-odds-and-ends/comment-page-1/#comment-93441</link>
		<dc:creator>Evolving Squid</dc:creator>
		<pubDate>Mon, 02 Jun 2008 15:00:16 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2008/06/02/aas-odds-and-ends/#comment-93441</guid>
		<description>I finally own a little piece of heaven.  After seeing a BA video where he holding a chunk of meteorite, I decided to seek one out myself.  So now I have a 1.7 kg chunk of the Campo de Cielo meteorite... it&#039;s about as big as my fist, but is a weird shape.

It looks cool, and makes a great paperweight :)</description>
		<content:encoded><![CDATA[<p>I finally own a little piece of heaven.  After seeing a BA video where he holding a chunk of meteorite, I decided to seek one out myself.  So now I have a 1.7 kg chunk of the Campo de Cielo meteorite&#8230; it&#8217;s about as big as my fist, but is a weird shape.</p>
<p>It looks cool, and makes a great paperweight <img src='http://blogs.discovermagazine.com/badastronomy/wp-includes/images/smilies/icon_smile.gif' alt=':)' class='wp-smiley' /> </p>
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		<title>By: Charles</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2008/06/02/aas-odds-and-ends/comment-page-1/#comment-93440</link>
		<dc:creator>Charles</dc:creator>
		<pubDate>Mon, 02 Jun 2008 14:48:43 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2008/06/02/aas-odds-and-ends/#comment-93440</guid>
		<description>While concerns for the integrity of the orbiter after this are quite appropriate, given the speed of pad egress not to mention all of the forces in question blowing material &lt;i&gt;away&lt;/i&gt; from the orbiter, there is probably not very much to worry about at all.

Besides, the shuttle crew will inspect the craft fully after they get the spare arm off of and depart ISS.</description>
		<content:encoded><![CDATA[<p>While concerns for the integrity of the orbiter after this are quite appropriate, given the speed of pad egress not to mention all of the forces in question blowing material <i>away</i> from the orbiter, there is probably not very much to worry about at all.</p>
<p>Besides, the shuttle crew will inspect the craft fully after they get the spare arm off of and depart ISS.</p>
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		<title>By: VesperDEM</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2008/06/02/aas-odds-and-ends/comment-page-1/#comment-93439</link>
		<dc:creator>VesperDEM</dc:creator>
		<pubDate>Mon, 02 Jun 2008 14:31:04 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2008/06/02/aas-odds-and-ends/#comment-93439</guid>
		<description>Did it land on ice or create the ice when it landed? How hot are the landing thrusters as it lands? I realize that the thrusters would push the surface dust away, but I just wonder if the thrusters were hot enough to melt the ice under the surface and cause liquid to rise to the surface then freeze when the lander landed.

Either way, I can&#039;t wait to find out what the ice has in it. This has been one of the most interesting probes I have been around to hear about. The rovers are way more interesting when they stop and find things or travel huge distances to check other sites. The fact that they have been operating for as long as they have is truly a testament to the scientists and engineers that developed them!

Viva la Mars!</description>
		<content:encoded><![CDATA[<p>Did it land on ice or create the ice when it landed? How hot are the landing thrusters as it lands? I realize that the thrusters would push the surface dust away, but I just wonder if the thrusters were hot enough to melt the ice under the surface and cause liquid to rise to the surface then freeze when the lander landed.</p>
<p>Either way, I can&#8217;t wait to find out what the ice has in it. This has been one of the most interesting probes I have been around to hear about. The rovers are way more interesting when they stop and find things or travel huge distances to check other sites. The fact that they have been operating for as long as they have is truly a testament to the scientists and engineers that developed them!</p>
<p>Viva la Mars!</p>
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		<title>By: 01101001</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2008/06/02/aas-odds-and-ends/comment-page-1/#comment-93438</link>
		<dc:creator>01101001</dc:creator>
		<pubDate>Mon, 02 Jun 2008 14:26:34 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2008/06/02/aas-odds-and-ends/#comment-93438</guid>
		<description>Fix the near-unintelligible survey question: &quot;what you in&quot;. I think it&#039;s &quot;what drew you in&quot; and that&#039;s how I answered (and I noted my confusion on the form, so if anyone reads early results, maybe it&#039;ll get fixed fast).</description>
		<content:encoded><![CDATA[<p>Fix the near-unintelligible survey question: &#8220;what you in&#8221;. I think it&#8217;s &#8220;what drew you in&#8221; and that&#8217;s how I answered (and I noted my confusion on the form, so if anyone reads early results, maybe it&#8217;ll get fixed fast).</p>
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		<title>By: Spiv</title>
		<link>http://blogs.discovermagazine.com/badastronomy/2008/06/02/aas-odds-and-ends/comment-page-1/#comment-93437</link>
		<dc:creator>Spiv</dc:creator>
		<pubDate>Mon, 02 Jun 2008 14:20:58 +0000</pubDate>
		<guid isPermaLink="false">http://blogs.discovermagazine.com/badastronomy/2008/06/02/aas-odds-and-ends/#comment-93437</guid>
		<description>Here&#039;s some high res of the pad:
http://pigeonfish.info/pics/paddamage/

The bricks getting blown out I understand, the buckled concrete is a little strange though.</description>
		<content:encoded><![CDATA[<p>Here&#8217;s some high res of the pad:<br />
<a href="http://pigeonfish.info/pics/paddamage/" rel="nofollow">http://pigeonfish.info/pics/paddamage/</a></p>
<p>The bricks getting blown out I understand, the buckled concrete is a little strange though.</p>
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