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<html>
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<title>Mars in Color, from "Opportunity"</title>
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<h1>Mars in Color, from "Opportunity"</font></h1>
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<font size=1>4/9/2004 <br></font>
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<font size=1>4/8/2004 <br></font>
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<font size=1>4/7/2004 <br></font>
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<font size=1>4/6/2004 <br></font>
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<font size=1>4/5/2004 <br></font>
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<font size=1>4/5/2004 <br></font>
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<font size=1>4/4/2004 <br></font>
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<font size=1>4/4/2004 <br></font>
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<font size=1>4/4/2004 <br></font>
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<td width="25%" align="center" valign="top">
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<font size=1>4/3/2004 <br></font>
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</div>
<font size=1>3/30/2004 <br></font>
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<td width="25%" align="center" valign="top">
<a href="1P133785855ESF08AMP2571LM1.jpeg"><img src="small_1P133785855ESF08AMP2571LM1.jpg" border="0"></a>
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<font size=1>3/28/2004 <br></font>
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<a href="1P133776998ESF08A6P2570LM1.jpeg"><img src="small_1P133776998ESF08A6P2570LM1.jpg" border="0"></a>
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<font size=1>3/28/2004 <br></font>
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<a href="1P133693064ESF0874P2566LM1.jpeg"><img src="small_1P133693064ESF0874P2566LM1.jpg" border="0"></a>
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<font size=1>3/27/2004 <br></font>
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<td width="25%" align="center" valign="top">
<a href="1P133420285ESF0830P2558LM1.jpeg"><img src="small_1P133420285ESF0830P2558LM1.jpg" border="0"></a>
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<font size=1>3/24/2004 <br></font>
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<a href="1P133331469ESF0800P2556LM1.jpeg"><img src="small_1P133331469ESF0800P2556LM1.jpg" border="0"></a>
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<font size=1>3/23/2004 <br></font>
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<td width="25%" align="center" valign="top">
<a href="1P133245017ESF0700P2555LM1.jpeg"><img src="small_1P133245017ESF0700P2555LM1.jpg" border="0"></a>
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<font size=1>3/22/2004 <br></font>
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<a href="1P133243660ESF0700P2554LM1.jpeg"><img src="small_1P133243660ESF0700P2554LM1.jpg" border="0"></a>
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<font size=1>3/22/2004 <br></font>
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<td width="25%" align="center" valign="top">
<a href="1P133158353ESF06HEP2548LM1.jpeg"><img src="small_1P133158353ESF06HEP2548LM1.jpg" border="0"></a>
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<font size=1>3/21/2004 <br></font>
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<a href="1P133074816ESF06GQP2404LM1.jpeg"><img src="small_1P133074816ESF06GQP2404LM1.jpg" border="0"></a>
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<font size=2>Infrared used for red<br></font>
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<font size=1>3/20/2004 <br></font>
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<font size=2>filter 2 (infrared) used for red<br></font>
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<font size=1>3/20/2004 <br></font>
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<a href="1P133074423EFF06GQP2404LM1.jpeg"><img src="small_1P133074423EFF06GQP2404LM1.jpg" border="0"></a>
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<font size=2>filter 2 (infrared) used for red<br></font>
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<font size=1>3/20/2004 <br></font>
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<a href="1P133074221EFF06GQP2404LM1.jpeg"><img src="small_1P133074221EFF06GQP2404LM1.jpg" border="0"></a>
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<font size=1>3/20/2004 <br></font>
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<td width="25%" align="center" valign="top">
<a href="1P133073549ESF06GQP2543LM1.jpeg"><img src="small_1P133073549ESF06GQP2543LM1.jpg" border="0"></a>
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<font size=1>3/20/2004 <br></font>
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<td width="25%" align="center" valign="top">
<a href="1P133065903ESF06GOP2542LM1.jpeg"><img src="small_1P133065903ESF06GOP2542LM1.jpg" border="0"></a>
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</div>
<font size=1>3/20/2004 <br></font>
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<td width="25%" align="center" valign="top">
<a href="1P132990237ESF06GOP2541LM1.jpeg"><img src="small_1P132990237ESF06GOP2541LM1.jpg" border="0"></a>
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<font size=1>3/19/2004 <br></font>
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<td width="25%" align="center" valign="top">
<a href="1P132898744ESF06ASP2599LM1.jpeg"><img src="small_1P132898744ESF06ASP2599LM1.jpg" border="0"></a>
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<font size=1>3/18/2004 <br></font>
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<td width="25%" align="center" valign="top">
<a href="1P132897600ESF06ASP2598LM1.jpeg"><img src="small_1P132897600ESF06ASP2598LM1.jpg" border="0"></a>
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<font size=1>3/18/2004 <br></font>
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<a href="1P132801357ESF06A8P2591LM1.jpeg"><img src="small_1P132801357ESF06A8P2591LM1.jpg" border="0"></a>
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</div>
<font size=1>3/17/2004 <br></font>
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<a href="1P132800394ESF06A8P2590LM1.jpeg"><img src="small_1P132800394ESF06A8P2590LM1.jpg" border="0"></a>
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<font size=1>3/17/2004 <br></font>
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<a href="1P132715201EFF0674P2585LM1.jpeg"><img src="small_1P132715201EFF0674P2585LM1.jpg" border="0"></a>
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<font size=2>Dubbed "Carousel," the rock in this image was the target of the Mars Exploration Rover Opportunity science team's outcrop "scuff test." On sol 51 (March 15, 2004), Opportunity slowly rotated its left front wheel on the rock, abrading it in the same way that geology students use a scratch test to determine the hardness of minerals. The image on the right, taken by the rover's navigation camera on sol 51, shows the rock post-scuff. In this image, it is apparent that Opportunity scratched the surface of "Carousel" and deposited dirt that it was carrying in its wheel rims.<br></font>
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<font size=1>3/16/2004 <br></font>
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<a href="1P132714042EFF0674P2584LM1.jpeg"><img src="small_1P132714042EFF0674P2584LM1.jpg" border="0"></a>
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<font size=1>3/16/2004 <br></font>
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<td width="25%" align="center" valign="top">
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</div>
<font size=1>3/15/2004 <br></font>
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<a href="1P132622990EFF0602P2575LM1.jpeg"><img src="small_1P132622990EFF0602P2575LM1.jpg" border="0"></a>
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</div>
<font size=1>3/15/2004 <br></font>
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<font size=2>"Shoemaker's Patio" near the Mars Exploration Rover Opportunity's landing site, shows finely layered sediments, which have been accentuated by erosion. The sphere-like grains or "blueberries" distributed throughout the outcrop can be seen lining up with individual layers. This observation indicates that the spherules are geologic features called concretions, which form in pre-existing wet sediments. Other sphere-like grains, such as impact spherules or volcanic lapilli (fragments of material between 2 and 64 millimeters or .08 and 2.5 inches in maximum dimension that are ejected from a volcano) are thought to be deposited with sediments and thus would form layers distinct from those of the rocks. This image was captured by the rover's panoramic camera on the 50th martian day, or sol, of the mission.<br></font>
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<font size=1>3/15/2004 <br></font>
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<a href="1P132546477ESF0600P2572LM1.jpeg"><img src="small_1P132546477ESF0600P2572LM1.jpg" border="0"></a>
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<font size=1>3/14/2004 <br></font>
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<a href="1P132545609ESF0600P2571LM1.jpeg"><img src="small_1P132545609ESF0600P2571LM1.jpg" border="0"></a>
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<font size=1>3/14/2004 <br></font>
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<a href="1P132451333ESF05AMP2568LM1.jpeg"><img src="small_1P132451333ESF05AMP2568LM1.jpg" border="0"></a>
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<font size=2>This image is of the exceptional rock called "Berry Bowl" in the "Eagle Crater" outcrop. The study of this "blueberry-strewn" area and the identification of hematite as the major iron-bearing element within these sphere-like grains helped scientists confirm their hypothesis that the hematite in these martian spherules was deposited in water. To separately analyze the mineralogical content of three main features within this area -- blueberries, dust and rock -- it was important that the rock abrasion tool's brush was able to rest on a relatively berry-free spot. The rock's small size and crowd of berries made the 10-minute brushing a challenge to plan and execute. The successful brushing on the target whimsically referred to as "Near Empty" on the rover's 48th sol on Mars left a dust-free impression for subsequent examination by the rover's spectrometers. No grinding was necessary on the rock because spectral data obtained on the dust-free surface were sufficient to verify that the rock's chemical composition differs significantly from the hematite-rich berries.<br></font>
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<font size=1>3/13/2004 <br></font>
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<a href="1P132445003ESF05AMP2131LM1.jpeg"><img src="small_1P132445003ESF05AMP2131LM1.jpg" border="0"></a>
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<font size=1>3/13/2004 <br></font>
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<a href="1P132365960ESF05AMP2149LM1.jpeg"><img src="small_1P132365960ESF05AMP2149LM1.jpg" border="0"></a>
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<font size=1>3/12/2004 <br></font>
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<td width="25%" align="center" valign="top">
<a href="1P132356212ESF05AMP2566LM1.jpeg"><img src="small_1P132356212ESF05AMP2566LM1.jpg" border="0"></a>
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<font size=1>3/12/2004 <br></font>
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<a href="1P132277630ESF05AMP2563LM1.jpeg"><img src="small_1P132277630ESF05AMP2563LM1.jpg" border="0"></a>
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<font size=2>The sphere-like grains or "blueberries" distributed throughout the outcrop can be seen lining up with individual layers. This observation indicates that the spherules are geologic features called concretions, which form in pre-existing wet sediments. Other sphere-like grains, such as impact spherules or volcanic lapilli (fragments of material between 2 and 64 millimeters or .08 and 2.5 inches in maximum dimension that are ejected from a volcano) are thought to be deposited with sediments and thus would form layers distinct from those of the rocks.<br></font>
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<font size=1>3/11/2004 <br></font>
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<td width="25%" align="center" valign="top">
<a href="1P132274965ESF05AMP2565LM1.jpeg"><img src="small_1P132274965ESF05AMP2565LM1.jpg" border="0"></a>
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</div>
<font size=1>3/11/2004 <br></font>
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<td width="25%" align="center" valign="top">
<a href="1P132273859ESF05AMP2564LM1.jpeg"><img src="small_1P132273859ESF05AMP2564LM1.jpg" border="0"></a>
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<font size=1>3/11/2004 <br></font>
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<a href="1P132181525ESF05A6P2560LM1.jpeg"><img src="small_1P132181525ESF05A6P2560LM1.jpg" border="0"></a>
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<font size=2>the 3.1 millimeter-deep (just over one-tenth of an inch) hole ground by the Mars Exploration Rover Opportunity's rock abrasion tool in the target called "Mojo 2" on "Flatrock" was taken on the 44th martian day, or sol, of the mission. It will help complete the chemical analysis of the lowest layer of the outcrop in the crater where the rover now resides. After a brief brushing on sol 45, the science team plans to place Opportunity's spectrometers on the hole to collect data vital to their understanding of this impressive outcrop. <br><br>Scientists believe that the spherule or "blueberry" in the upper right area of the circular impression was sliced in half by the rock abrasion tool. "Blueberries" are a known obstruction to the grinding tool that cause it to terminate its sequence. Despite the stall, the rock abrasion tool abraded "Flatrock" for one hour and five minutes, producing a cavity ripe for investigation.<br></font>
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<font size=1>3/10/2004 <br></font>
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<a href="1P132174043ESF05A6P2556LM1.jpeg"><img src="small_1P132174043ESF05A6P2556LM1.jpg" border="0"></a>
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<font size=1>3/10/2004 <br></font>
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<a href="1P132105845ESF05A6P2558LM1.jpeg"><img src="small_1P132105845ESF05A6P2558LM1.jpg" border="0"></a>
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<font size=1>3/9/2004 <br></font>
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<a href="1P132020940ESF05A6P2552LM1.jpeg"><img src="small_1P132020940ESF05A6P2552LM1.jpg" border="0"></a>
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<font size=1>3/8/2004 <br></font>
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<font size=1>3/7/2004 <br></font>
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<font size=1>3/7/2004 <br></font>
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<font size=2>This hole was made by the rover's rock abrasion tool, located on its instrument deployment device, or "arm." The hole is located on a target called "McKittrick" at the "El Capitan" region of the Meridiani Planum, Mars, rock outcrop. It was made on the 30th martian day, or sol, of Opportunity's journey.<br><br>The grinding process at has generated a significant amount of reddish dust. Color and spectral properties of the dust show that it may contain some fine-grained crystalline red hematite.<br><br>Courtesy NASA/JPL<br></font>
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<font size=1>3/1/2004 <br></font>
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<font size=1>2/29/2004 <br></font>
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<font size=2>This hole was made by the rover's rock abrasion tool, located on its instrument deployment device, or "arm." The hole is located on a target called "Guadalupe" at the "El Capitan" region of the Meridiani Planum, Mars, rock outcrop. It was made on the 30th martian day, or sol, of Opportunity's journey.<br><br>The grinding process at has generated a significant amount of reddish dust. Color and spectral properties of the dust show that it may contain some fine-grained crystalline red hematite.<br></font>
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<font size=1>2/29/2004 <br></font>
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<font size=2>The silver colored metal of the ring on the solar abrasion tool is a reddish brown after the dust settled on it, probably from fine-grained hematite.<br></font>
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<font size=1>2/29/2004 <br></font>
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<font size=1>2/28/2004 <br></font>
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<font size=1>2/28/2004 <br></font>
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<font size=1>2/27/2004 <br></font>
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<font size=1>2/27/2004 <br></font>
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<font size=1>2/22/2004 <br></font>
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<font size=2>The image is from the right pan camera, made up of ultraviolet bandwidths.<br></font>
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<font size=1>2/20/2004 <br></font>
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<font size=1>2/20/2004 <br></font>
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<font size=2>The "El Capitan" region of the rock outcrop at Meridiani Planum, Mars. This image shows fine, parallel lamination in the upper area of the rock, which also contains scattered sphere-shaped objects ranging from 1 to 2 millimeters (.04 to .08 inches) in size. There are also more abundant, scattered vugs, or small cavities, that are shaped like discs. These are about 1 centimeter (0.4 inches) long.<br></font>
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<font size=1>2/20/2004 <br></font>
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<font size=1>2/20/2004 <br></font>
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<font size=2>The "El Capitan" region of the rock outcrop at Meridiani Planum, Mars.<br></font>
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<font size=1>2/20/2004 <br></font>
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<font size=2>The "capture magnet," which attracts atmospheric dust particles from the front deck of the rover. The lighter-colored areas in the image are clean sections of the magnet virtually free of dust, and the dark areas are places where dust has collected. Dust particles in the martian atmosphere are estimated to be about 1 micrometer in size (1/1000th of a millimeter or 1/1000th of .04 inches). <br><br>The material below the magnet's aluminum surface is laid out in concentric rings, giving the image a bull's-eye appearance. The magnet was designed in this configuration to collect as much atmospheric dust as possible. Spirit and Opportunity each carry seven magnets.<br></font>
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<font size=1>2/19/2004 <br></font>
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<font size=2>The Mars Exploration Rover Opportunity dragged one of its wheels back and forth across the sandy soil at Meridiani Planum to create a hole (bottom left corner) approximately 50 centimeters (19.7 inches) long by 20 centimeters (7.9 inches) wide by 9 centimeters (3.5 inches) deep. The rover's instrument deployment device, or arm, will begin studying the fresh soil at the bottom of this trench later today for clues to its mineral composition and history. Scientists chose this particular site for digging because previous data taken by the rover's miniature thermal emission spectrometer indicated that it contains crystalline hematite, a mineral that sometimes forms in the presence of water. The brightness of the newly-exposed soil is thought to be either intrinsic to the soil itself, or a reflection of the Sun.<br></font>
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<font size=1>2/19/2004 <br></font>
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<font size=2>The Mars Exploration Rover Opportunity dragged one of its wheels back and forth across the sandy soil at Meridiani Planum to create a hole (bottom left corner) approximately 50 centimeters (19.7 inches) long by 20 centimeters (7.9 inches) wide by 9 centimeters (3.5 inches) deep. The rover's instrument deployment device, or arm, will begin studying the fresh soil at the bottom of this trench later today for clues to its mineral composition and history. Scientists chose this particular site for digging because previous data taken by the rover's miniature thermal emission spectrometer indicated that it contains crystalline hematite, a mineral that sometimes forms in the presence of water. The brightness of the newly-exposed soil is thought to be either intrinsic to the soil itself, or a reflection of the Sun.<br></font>
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<font size=1>2/19/2004 <br></font>
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<font size=1>2/17/2004 <br></font>
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<font size=1>2/17/2004 <br></font>
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<font size=1>2/14/2004 <br></font>
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<font size=1>2/12/2004 <br></font>
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<font size=1>2/9/2004 <br></font>
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<font size=1>2/8/2004 <br></font>
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<font size=2>Rock abrasion tool, also known as "rat" (circular device in center), located on the rover's instrument deployment device, or "arm."<br></font>
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<font size=1>2/8/2004 <br></font>
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<font size=1>2/7/2004 <br></font>
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<font size=1>2/7/2004 <br></font>
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<font size=1>2/7/2004 <br></font>
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<font size=2>A region at the end of the rock outcrop lining the small crater, called "Eagle Crater." The sphere-like grains or "blueberries" dotting the rocks in the outcrop can also be seen above the rocks, suggesting that these geologic features have origins beyond Eagle Crater.<br></font>
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<font size=1>2/7/2004 <br></font>
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<font size=1>2/3/2004 <br></font>
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<font size=1>1/28/2004 <br></font>
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<font size=1>1/28/2004 <br></font>
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<font size=1>1/28/2004 <br></font>
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<font size=1>1/28/2004 <br></font>
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<font size=1>1/28/2004 <br></font>
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<font size=1>1/28/2004 <br></font>
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<font size=1>1/28/2004 <br></font>
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<font size=1>1/28/2004 <br></font>
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<font size=1>1/28/2004 <br></font>
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<font size=2>These layered rocks measure only 10 centimeters (4 inches) tall and are thought to be either volcanic ash deposits or sediments carried by water or wind.<br></font>
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<font size=1>1/27/2004 <br></font>
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<font size=1>1/26/2004 <br></font>
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