Phoenix surface mission

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MeteorWayne

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Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>Since it looks like they may finally have delivered enough material in the latest attempt, I'm hoping for confirmation that the oven is full, and maybe even results of a preliminary heating that show if any ice remained.One can hope. &nbsp;http://www.unmannedspaceflight.com/index.php?s=&showtopic=5332&view=findpost&p=121840 <br />Posted by centsworth_II</DIV><br /><br />That would be my hope as well. Only a bit more than 2 hours to go.... <div class="Discussion_UserSignature"> <p><font color="#000080"><em><font color="#000000">But the Krell forgot one thing John. Monsters. Monsters from the Id.</font></em> </font></p><p><font color="#000080">I really, really, really, really miss the "first unread post" function</font><font color="#000080"> </font></p> </div>
 
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3488

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<p><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'><font color="#ff0000">Since it looks like they may finally have delivered enough material in the latest attempt, I'm hoping for confirmation that the oven is full, and maybe even results of a preliminary heating that show if any ice remained.One can hope. <font color="#000080">&nbsp;http://www.unmannedspaceflight.com/index.php?s=&showtopic=5332&view=findpost&p=121840 </font><br /> Posted by centsworth_II</font></DIV></p><p><strong><font size="2" color="#000000">Cheers centsworth_II, lets hope that turns out to be true. The image you posted looks very promising.</font></strong></p><p>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'><font color="#ff0000">That would be my hope as well. Only a bit more than 2 hours to go.... <br /> Posted by MeteorWayne</font></DIV></p><p><font size="2" color="#000000"><strong>Only 19 minutes to go.</strong></font></p><p><font size="2" color="#000000"><strong>Andrew Brown.&nbsp;</strong></font></p> <div class="Discussion_UserSignature"> <p><font color="#000080">"I suddenly noticed an anomaly to the left of Io, just off the rim of that world. It was extremely large with respect to the overall size of Io and crescent shaped. It seemed unbelievable that something that big had not been visible before".</font> <em><strong><font color="#000000">Linda Morabito </font></strong><font color="#800000">on discovering that the Jupiter moon Io was volcanically active. Friday 9th March 1979.</font></em></p><p><font size="1" color="#000080">http://www.launchphotography.com/</font><br /><br /><font size="1" color="#000080">http://anthmartian.googlepages.com/thisislandearth</font></p><p><font size="1" color="#000080">http://web.me.com/meridianijournal</font></p> </div>
 
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nimbus

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A witch hat and the "I'm melting" routine.. Too bad he looked so nervous. <div class="Discussion_UserSignature"> </div>
 
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3488

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<p><font color="#000080"><strong><font size="3">Weather Summary Sol 1 - 63.</font></strong></font><br /> <img src="http://sitelife.space.com/ver1.0/Content/images/store/13/11/7da85def-cdcb-462c-8b97-a7c96fd7934c.Medium.jpg" alt="" /><br />&nbsp;</p><p><font color="#000080"><strong><font size="3">Hi Res 360 deg Mission Success Panorama.</font></strong></font><br /> <img src="http://sitelife.space.com/ver1.0/Content/images/store/9/10/09218ec1-d3b0-48b2-8a0e-de83ffa006aa.Medium.jpg" alt="" /><br />&nbsp;</p><p><font size="2"><strong>Andrew Brown.&nbsp;</strong></font></p> <div class="Discussion_UserSignature"> <p><font color="#000080">"I suddenly noticed an anomaly to the left of Io, just off the rim of that world. It was extremely large with respect to the overall size of Io and crescent shaped. It seemed unbelievable that something that big had not been visible before".</font> <em><strong><font color="#000000">Linda Morabito </font></strong><font color="#800000">on discovering that the Jupiter moon Io was volcanically active. Friday 9th March 1979.</font></em></p><p><font size="1" color="#000080">http://www.launchphotography.com/</font><br /><br /><font size="1" color="#000080">http://anthmartian.googlepages.com/thisislandearth</font></p><p><font size="1" color="#000080">http://web.me.com/meridianijournal</font></p> </div>
 
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MeteorWayne

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<div id="post-249967" class="postcolor">Today's Headlines...<br /><br />Water ice confirmed by TEGA in sample with 1-3% water ice (delivered to Oven 0). Heat of melting sublimation at 0 degrees C means it can only be water ice. TEGA analysis of gases also confirmed water. Sample was mostly soil with a bit of ice from ice/soil interface.<br /><br />Mission extended to end of fiscal year Sept 30. For only $2 million more, very cheap IMHO. To Sol 124.<br /><br />Full Stereo Panorama completed, took 30 days to accomplish. ~ 100 MB of data, or 15 full days of relay capability (out of 63 or so). Now working on Super Pan, reimaging at higher resolution. Imaging interesting targets first since we don't know how long the mission will last.<br /><br />New targets for extended mission (BTW through SOl 124)<br /><br />Atmospheric pressure decreasing as CO2 condenses in southern hemisphere, effect still can be measured in northern arctic.<br />Scribblenotes later.<br /><br />MW </div> <div class="Discussion_UserSignature"> <p><font color="#000080"><em><font color="#000000">But the Krell forgot one thing John. Monsters. Monsters from the Id.</font></em> </font></p><p><font color="#000080">I really, really, really, really miss the "first unread post" function</font><font color="#000080"> </font></p> </div>
 
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MeteorWayne

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<p><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>A witch hat and the "I'm melting" routine.. Too bad he looked so nervous. <br />Posted by nimbus</DIV><br /><br />To clarify, the site of the sample was named "Wicked Witch" in honor of the Hansel and Gretel story where the witch was shoved in the oven.</p><p>However, Bill Boynton suggested it should have been named (Hey, he named it) Wicked Witch of the West for her line</p><p>"You cursed brat. Look what you have done! I'm Melting....."</p><p>MW</p> <div class="Discussion_UserSignature"> <p><font color="#000080"><em><font color="#000000">But the Krell forgot one thing John. Monsters. Monsters from the Id.</font></em> </font></p><p><font color="#000080">I really, really, really, really miss the "first unread post" function</font><font color="#000080"> </font></p> </div>
 
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3488

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<p><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'><font color="#ff0000">Today's Headlines...Water ice confirmed by........................ <br /> Posted by MeteorWayne</font></DIV></p><p><font size="2"><strong>Cheers Wayne,</strong></font></p><p><font size="2"><strong>Looking forward to your excellent Scribblenotes, always of a high professional standard.</strong></font></p><p><strong><font size="3" color="#000080">Mission Success Pan in a polar view.</font></strong><br /> <img src="http://sitelife.space.com/ver1.0/Content/images/store/5/3/b56d03d5-4e9a-4300-835c-bbe8fa270b5b.Medium.jpg" alt="" /><br />&nbsp;</p><p><font size="3" color="#000080"><strong>New dig areas. </strong></font><br /> <img src="http://sitelife.space.com/ver1.0/Content/images/store/8/2/78eef068-94e5-4d6e-b23b-409681ca2b94.Medium.jpg" alt="" /><br />&nbsp;</p><p><font size="2" color="#000000"><strong>Andrew Brown.&nbsp;</strong></font></p> <div class="Discussion_UserSignature"> <p><font color="#000080">"I suddenly noticed an anomaly to the left of Io, just off the rim of that world. It was extremely large with respect to the overall size of Io and crescent shaped. It seemed unbelievable that something that big had not been visible before".</font> <em><strong><font color="#000000">Linda Morabito </font></strong><font color="#800000">on discovering that the Jupiter moon Io was volcanically active. Friday 9th March 1979.</font></em></p><p><font size="1" color="#000080">http://www.launchphotography.com/</font><br /><br /><font size="1" color="#000080">http://anthmartian.googlepages.com/thisislandearth</font></p><p><font size="1" color="#000080">http://web.me.com/meridianijournal</font></p> </div>
 
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efron_24

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<p>"Atmospheric pressure decreasing as CO2 condenses in southern hemisphere, effect still can be measured in northern arctic."</p><p>&nbsp;decrease would mean getting less ?</p><p>&nbsp;That is amazing... that things at the South pole effect the northpole this much<br /></p> <div class="Discussion_UserSignature"> </div>
 
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Mee_n_Mac

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Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>"Atmospheric pressure decreasing as CO2 condenses in southern hemisphere, effect still can be measured in northern arctic."&nbsp;decrease would mean getting less ?&nbsp;That is amazing... that things at the South pole effect the northpole this much <br />Posted by <strong>efron_24</strong></DIV><br /><br />The Vikings measured a yearly 2-3 millibar difference.&nbsp; Quite a bit for an&nbsp;9&nbsp;mB atmosphere ! <div class="Discussion_UserSignature"> <p>-----------------------------------------------------</p><p><font color="#ff0000">Ask not what your Forum Software can do do on you,</font></p><p><font color="#ff0000">Ask it to, please for the love of all that's Holy, <strong>STOP</strong> !</font></p> </div>
 
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3488

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<p><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'><font color="#ff0000">The Vikings measured a yearly 2-3 millibar difference.&nbsp; Quite a bit for an&nbsp;9&nbsp;mB atmosphere ! <br /> Posted by mee_n_mac</font></DIV></p><p><strong><font size="2">Yes that's very true. I expect that we will see the same trend with Phoenix. It'll be interesting when the decreasing pressure drops. Wonder if Phoenix will last long enough? I hope so, as that means the atmosphere will be migrating back north & the first CO2 frosts start appearing.<br /></font></strong></p><p><strong><font size="3" color="#000080">Looking 'down' on Phoenix. </font></strong><br /> <img src="http://sitelife.space.com/ver1.0/Content/images/store/8/0/18c0e376-4cc5-4827-a03f-c6edbe05f257.Medium.jpg" alt="" /><br /><font color="#000080"><strong>&nbsp;</strong></font></p><p><font color="#000080"><strong><font size="3">LIDAR movie near 'midnight' low sun using Green Filter.</font></strong></font><br /> <img src="http://sitelife.space.com/ver1.0/Content/images/store/13/12/8d844dde-da40-4ecb-8c66-be2267613e84.Medium.jpg" alt="" /><br />&nbsp;</p><p><font color="#000080"><strong><font size="3">Mission Success panorama movie. </font></strong></font><br /> <img src="http://sitelife.space.com/ver1.0/Content/images/store/0/13/00130a4f-02eb-4f76-ad72-8a1bbf548f9d.Medium.jpg" alt="" /><br />&nbsp;</p><p><font size="3"><strong><font color="#000080">Weather Report Sol 60.</font></strong></font><br /> <img src="http://sitelife.space.com/ver1.0/Content/images/store/7/5/c76e3c53-d031-4a18-9521-94e2b5a755d1.Medium.jpg" alt="" /><br />&nbsp;</p><p><strong><font size="3" color="#000080">Weather Summary sol 51 to Sol 61. </font></strong><br /> <img src="http://sitelife.space.com/ver1.0/Content/images/store/2/4/d25919d5-7489-458d-84f0-77d3b45457d0.Medium.gif" alt="" /><br />&nbsp;</p><p><font size="2"><strong>Andrew Brown.&nbsp;</strong></font></p> <div class="Discussion_UserSignature"> <p><font color="#000080">"I suddenly noticed an anomaly to the left of Io, just off the rim of that world. It was extremely large with respect to the overall size of Io and crescent shaped. It seemed unbelievable that something that big had not been visible before".</font> <em><strong><font color="#000000">Linda Morabito </font></strong><font color="#800000">on discovering that the Jupiter moon Io was volcanically active. Friday 9th March 1979.</font></em></p><p><font size="1" color="#000080">http://www.launchphotography.com/</font><br /><br /><font size="1" color="#000080">http://anthmartian.googlepages.com/thisislandearth</font></p><p><font size="1" color="#000080">http://web.me.com/meridianijournal</font></p> </div>
 
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nimbus

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Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>To clarify, the site of the sample was named "Wicked Witch" in honor of the Hansel and Gretel story where the witch was shoved in the oven.However, Bill Boynton suggested it should have been named (Hey, he named it) Wicked Witch of the West for her line"You cursed brat. Look what you have done! I'm Melting....."MW <br /> Posted by MeteorWayne</DIV>Thanks, I should have specified that :)<br /> <div class="Discussion_UserSignature"> </div>
 
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a_lost_packet_

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<p><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>Today's Headlines...Water ice confirmed by TEGA in sample with 1-3% water ice (delivered to Oven 0). Heat of melting sublimation at 0 degrees C means it can only be water ice. TEGA analysis of gases also confirmed water. Sample was mostly soil with a bit of ice from ice/soil interface.Mission extended to end of fiscal year Sept 30. For only $2 million more, very cheap IMHO. To Sol 124.Full Stereo Panorama completed, took 30 days to accomplish. ~ 100 MB of data, or 15 full days of relay capability (out of 63 or so). Now working on Super Pan, reimaging at higher resolution. Imaging interesting targets first since we don't know how long the mission will last.New targets for extended mission (BTW through SOl 124)Atmospheric pressure decreasing as CO2 condenses in southern hemisphere, effect still can be measured in northern arctic.Scribblenotes later.MW Posted by MeteorWayne</DIV></p><p>Finally.</p><p>Water ice.</p><p>From Mars.</p><p>Real water.</p><p>Does anyone else feel like smoking a cigarette? </p> <div class="Discussion_UserSignature"> <font size="1">I put on my robe and wizard hat...</font> </div>
 
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nimbus

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Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>Finally.Water ice.From Mars.Real water.Does anyone else feel like smoking a cigarette? <br /> Posted by a_lost_packet_</DIV>Aye. &nbsp;One with a few million pounds of thrust.<br /> <div class="Discussion_UserSignature"> </div>
 
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Smersh

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Replying to:<BR/><DIV CLASS='Discussion_PostQuote'> ... Does anyone else feel like smoking a cigarette? <br /><p> Posted by a_lost_packet_</DIV></p><p>Please don't encourage me!</p><p>But yes, this is tremendous news! The mission has been extended as well, because of this discovery:</p><p><strong><font color="#008000">RELEASE : 08-195 <br /><br /><br />NASA Spacecraft Confirms Martian Water, Mission Extended <br /><br /><br />TUCSON, Ariz. -- Laboratory tests aboard NASA's Phoenix Mars Lander have identified water in a soil sample. The lander's robotic arm delivered the sample Wednesday to an instrument that identifies vapors produced by the heating of samples. <br /><br />"We have water," said William Boynton of the University of Arizona, lead scientist for the Thermal and Evolved-Gas Analyzer, or TEGA. "We've seen evidence for this water ice before in observations by the Mars Odyssey orbiter and in disappearing chunks observed by Phoenix last month, but this is the first time Martian water has been touched and tasted."<br /></font></strong></p><p><font color="#000000">Full story: http://www.nasa.gov/home/hqnews/2008/jul/HQ_08_195_Phoenix_water.html</font></p><p>It's a shame that the forums are on a go-slow again. I'm sure a lot of people would like to read /post about this.&nbsp;</p> <div class="Discussion_UserSignature"> <h1 style="margin:0pt;font-size:12px">----------------------------------------------------- </h1><p><font color="#800000"><em>Lady Nancy Astor: "Winston, if you were my husband, I'd poison your tea."<br />Churchill: "Nancy, if you were my wife, I'd drink it."</em></font></p><p><font color="#0000ff"><strong>Website / forums </strong></font></p> </div>
 
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JonClarke

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<p><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>Jon,Here's a thought, to account for the unusual behaviors observed so far with the attempts to scoop up the highly hydrated soil....I am speaking as a chemist and not a geologist, so I don't know if&nbsp;my very speculative hypothesis&nbsp;is possible in soil chemistry, or in ice/soil mixes.&nbsp; But I do know what can happen in reaction flasks.What is the possibility that the ices/soils contain a buffered solution of silicic acid?&nbsp; Silicic acid polymerizes between pH 7-8, if I recall correctly, and especially as the water evaporates.&nbsp; And this was the pH measured for the soils.&nbsp; Polymerized silicic acid can be quite sticky to materials which have polar groups, and especially hydroxyl groups decorating their surfaces.&nbsp; Silicic acid polymers can thus cause soil particles in which the soil contains hydroxyl groups, or metal oxides,&nbsp;to adhere to each other and clump.&nbsp; And I suspect silicic acid polymers can adhere pretty well to metal surfaces, if those metal surfaces have a coating of oxide&nbsp; (since the top surface of any oxide coat in a hydrated environment contains pendant hydroxyl groups)...what is the surface of the scoop made of?&nbsp; Silicic acid can also polymerize to form tiny nanoparticles and colloids in water, in the right conditions.&nbsp; These nanoparticles then gradually clump up to form larger masses.&nbsp; When they substantially&nbsp;dry,&nbsp;silicic acid polymers&nbsp;become white friable silicate powders. <br />Posted by silylene</DIV></p><p>Sorry for the slow response, i have been uploading Woomera photos in the aviation section.&nbsp; Although for the lack of interst I might has well have been here!</p><p>Your suggestion is intriguing.&nbsp; Would these polymere still be sticky at Mars temperatures?</p><p>Jon<br /></p> <div class="Discussion_UserSignature"> <p><em>Whether we become a multi-planet species with unlimited horizons, or are forever confined to Earth will be decided in the twenty-first century amid the vast plains, rugged canyons and lofty mountains of Mars</em>  Arthur Clarke</p> </div>
 
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JonClarke

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<p>With a melting temperature of zero degrees that ice must be very pure.&nbsp; That's interesting for a whole lot of reasons.&nbsp; Could it be&nbsp;buried snow or glacial ice?</p><p>I notice that while there have been two MECA wet cell experiments the results of the second run have not been released.&nbsp; There are hints that there was something unexpected found.&nbsp; I wonder what?</p><p>Jon</p> <div class="Discussion_UserSignature"> <p><em>Whether we become a multi-planet species with unlimited horizons, or are forever confined to Earth will be decided in the twenty-first century amid the vast plains, rugged canyons and lofty mountains of Mars</em>  Arthur Clarke</p> </div>
 
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silylene old

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Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>Sorry for the slow response, i have been uploading Woomera photos in the aviation section.&nbsp; Although for the lack of interst I might has well have been here!Your suggestion is intriguing.&nbsp; Would these polymere still be sticky at Mars temperatures?Jon <br />Posted by jonclarke</DIV><br /><br />I don't know, but I suspect so. <div class="Discussion_UserSignature"> <div class="Discussion_UserSignature" align="center"><em><font color="#0000ff">- - - - - - - - - - - - - - - - - - - - - -</font></em> </div><div class="Discussion_UserSignature" align="center"><font color="#0000ff"><em>I really, really, really miss the "first unread post" function.</em></font> </div> </div>
 
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silylene old

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<p><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>With a melting temperature of zero degrees that ice must be very pure.&nbsp; That's interesting for a whole lot of reasons.&nbsp; Could it be&nbsp;buried snow or glacial ice?I notice that while there have been two MECA wet cell experiments the results of the second run have not been released.&nbsp; There are hints that there was something unexpected found.&nbsp; I wonder what?Jon <br />Posted by jonclarke</DIV></p><p>Yes, there was that very curious comment /question at the press conference about 'need to inform the presidential science advisor' (if I paraphrased that correctly - perhaps someone has the transcript), presumably about the results of the second MECA experiment.&nbsp; I wonder what this referred to?</p> <div class="Discussion_UserSignature"> <div class="Discussion_UserSignature" align="center"><em><font color="#0000ff">- - - - - - - - - - - - - - - - - - - - - -</font></em> </div><div class="Discussion_UserSignature" align="center"><font color="#0000ff"><em>I really, really, really miss the "first unread post" function.</em></font> </div> </div>
 
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franontanaya

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<p><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>There are hints that there was something unexpected found.&nbsp; I wonder what?</DIV></p><p>Asparagine aminoacids... that would be fun.</p><p>AFAIK, they can detect molar masses up to 150-160. </p> <div class="Discussion_UserSignature"> </div>
 
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centsworth_II

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<p><font color="#333399"><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>With a melting temperature of zero degrees that ice must be very pure.<br /> Posted by jonclarke</DIV></font></p><p>That strikes me as strange in light of speculation that the soil stickiness may be caused by brine. We have to remember that only about one percent of the sample was ice, so as a sample it certainly wasn't pure ice.&nbsp; Maybe there are individual crystals of pure ice present as well as a brine layer on the soil grains.&nbsp; Is this a physical possibility?&nbsp; </p> <div class="Discussion_UserSignature"> </div>
 
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derekmcd

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<p><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>Finally.Water ice.From Mars.Real water.Does anyone else feel like smoking a cigarette? <br /> Posted by a_lost_packet_</DIV></p><p>I think it is safe to say that this mission has been 120% successful despite having to work through a few glitches here and there.&nbsp; What a tremendous effort be everyone involved!!!</p><p>&nbsp;</p><p>&nbsp;</p><p>... And they're not done yet.&nbsp;</p> <div class="Discussion_UserSignature"> <div> </div><br /><div><span style="color:#0000ff" class="Apple-style-span">"If something's hard to do, then it's not worth doing." - Homer Simpson</span></div> </div>
 
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3488

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<p><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'><font color="#ff0000">That strikes me as strange in light of speculation that the soil stickiness may be caused by brine. We have to remember that only about one percent of the sample was ice, so as a sample it certainly wasn't pure ice.&nbsp; Maybe there are individual crystals of pure ice present as well as a brine layer on the soil grains.&nbsp; Is this a physical possibility?&nbsp; <br /> Posted by centsworth_II<font color="#000000">[</font></font>/QUOTE]</p><p><strong><font size="2">Could well be Centsworth_II. It would make a lot of sense & which salts would be present? NormalSodium Chloride, Epson Salts, sulfates, etc?</font></strong></p><p><strong><font size="2">There is a hint of something very interesting & important, hense the team being 100& sure before announcing anything.&nbsp;</font></strong></p><p>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'><font color="#ff0000">I think it is safe to say that this mission has been 120% successful despite having to work through a few glitches here and there.&nbsp; What a tremendous effort be everyone involved!!!&nbsp;&nbsp;... And they're not done yet.&nbsp; <br /> Posted by derekmcd</font></DIV></p><p><font size="2"><strong>Absolutely Derek & thank you for your consideration.</strong></font></p><p><font size="2"><strong>Phoenix has been an enormous success. Being involved personally in the campaign to save Phoenix, I for one, do not feel disappointed or cheated or feel like, well that campaign was a waste of time & energy. In fact, the very opposite is true, Phoenix is worth every dollar & more.</strong></font></p><p><font size="2"><strong>For such a low budget mission, Phoenix has & is continuing to deliver results that are far greater in value & are part of the increasing investment on the long term future of mankind.</strong></font></p><p><font size="2"><strong>Also you are correct, they are not done & I even think, the mission will surpass Sol 124, provided Phoenix is still delivering. I'm still hoping that we will see the commencing of CO2 frosts. </strong></font></p><p><font size="2"><strong>At this point, TEGA, the RA & MECA will be inoperable, but as long as the SSI & the weather equipment is still operational & that Phoenix can still communicate, the mission should still continue IMO.</strong></font></p><p><font size="2"><strong>Andrew Brown.&nbsp;</strong></font></p> <div class="Discussion_UserSignature"> <p><font color="#000080">"I suddenly noticed an anomaly to the left of Io, just off the rim of that world. It was extremely large with respect to the overall size of Io and crescent shaped. It seemed unbelievable that something that big had not been visible before".</font> <em><strong><font color="#000000">Linda Morabito </font></strong><font color="#800000">on discovering that the Jupiter moon Io was volcanically active. Friday 9th March 1979.</font></em></p><p><font size="1" color="#000080">http://www.launchphotography.com/</font><br /><br /><font size="1" color="#000080">http://anthmartian.googlepages.com/thisislandearth</font></p><p><font size="1" color="#000080">http://web.me.com/meridianijournal</font></p> </div>
 
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JonClarke

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<p><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>Yes, there was that very curious comment /question at the press conference about 'need to inform the presidential science advisor' (if I paraphrased that correctly - perhaps someone has the transcript), presumably about the results of the second MECA experiment.&nbsp; I wonder what this referred to? <br />Posted by silylene</DIV></p><p>Rampant speculation on my part</p><p>1 Unexpectedly high levels of nitrate and/or ammonium (indicators of microbial activity on Earth)</p><p>2 Strongly reduced material (indicative of organics on Earth)</p><p>3 Very high salinity (unexpected so close to low salinity)</p><p>4 Very low pH (unexpected so close to high pH)</p><p>5 Chemical activity noted in wet cell (changes in pH, Eh, salinity, ionic ratios, temperature) indicating unexpected chemical activity.</p><p>I wonder if there is a link to the chemical activity observed in Viking soils?</p><p><br />Jon</p> <div class="Discussion_UserSignature"> <p><em>Whether we become a multi-planet species with unlimited horizons, or are forever confined to Earth will be decided in the twenty-first century amid the vast plains, rugged canyons and lofty mountains of Mars</em>  Arthur Clarke</p> </div>
 
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JonClarke

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<p><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>That strikes me as strange in light of speculation that the soil stickiness may be caused by brine. We have to remember that only about one percent of the sample was ice, so as a sample it certainly wasn't pure ice.&nbsp; Maybe there are individual crystals of pure ice present as well as a brine layer on the soil grains.&nbsp; Is this a physical possibility?&nbsp; <br />Posted by centsworth_II</DIV></p><p>As water freezes it expells salts, so perhaps there are salts on the outside of the grains.&nbsp; But those salts will still depress the feezing point I think, which is why we add salt to ice.&nbsp; So I think this stuff really is very low in salt.</p><p>Jon<br /></p> <div class="Discussion_UserSignature"> <p><em>Whether we become a multi-planet species with unlimited horizons, or are forever confined to Earth will be decided in the twenty-first century amid the vast plains, rugged canyons and lofty mountains of Mars</em>  Arthur Clarke</p> </div>
 
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centsworth_II

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<font color="#333399"><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>1 Unexpectedly high levels of nitrate ...<br /> Posted by jonclarke</DIV><br /></font>Has there ever been any nitrate detected on Mars?&nbsp; If not, then any amount detected would be (very) noteworthy.&nbsp; Carbonates also would be noteworthy. <div class="Discussion_UserSignature"> </div>
 
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