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Locked="false" Priority="19" SemiHidden="false" UnhideWhenUsed="false" QFormat="true" Name="Subtle Emphasis" /> <w:LsdException Locked="false" Priority="21" SemiHidden="false" UnhideWhenUsed="false" QFormat="true" Name="Intense Emphasis" /> <w:LsdException Locked="false" Priority="31" SemiHidden="false" UnhideWhenUsed="false" QFormat="true" Name="Subtle Reference" /> <w:LsdException Locked="false" Priority="32" SemiHidden="false" UnhideWhenUsed="false" QFormat="true" Name="Intense Reference" /> <w:LsdException Locked="false" Priority="33" SemiHidden="false" UnhideWhenUsed="false" QFormat="true" Name="Book Title" /> <w:LsdException Locked="false" Priority="37" Name="Bibliography" /> <w:LsdException Locked="false" Priority="39" QFormat="true" Name="TOC Heading" /> </w:LatentStyles> </xml><![endif]--><!--[if gte mso 10]> <style> /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Normal Tablo"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin-top:0cm; mso-para-margin-right:0cm; mso-para-margin-bottom:10.0pt; mso-para-margin-left:0cm; line-height:115%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi; mso-fareast-language:EN-US;} </style> <![endif]--> <p class="MsoNormal">NASA’nın Opportunity isimli gezgini Nisan 2010’da Mars’ın Endeavour kraterinin kenarında bu fotoğrafı çekti.</p> <p class="MsoNormal"> </p> <p class="MsoNormal">Amerikan Havacılık ve Uzay Dairesi'nin (NASA) Mars'a 8 yıl önce gönderdiği ve hala faal tekerlekli robotu Opportunity, Kızıl Gezegen'de eskiden suyun varlığına dair şimdiye kadarki en iyi kanıtı keşfetti.</p> <p class="MsoNormal"> </p> <p class="MsoNormal">Oppurtunity'nin bilimsel sorumlusu Cornell Üniversitesi'nden Steve Squyres Amerikan Jeofizik Derneği toplantısında yaptığı açıklamada, son kullanım tarihini çoktan doldurmasına rağmen keşiflerini sürdüren Opportunity'nin incelediği dev Endeavour kraterinin duvarının yakınında ince, parlak bir mineral damarı keşfettiğini belirterek, bunun milyarlarca yıl önce suyun bıraktığı alçı taşı (jips) olduğunu kaydetti.</p> <p class="MsoNormal"> </p> <p class="MsoNormal">Bunun Opportunity'nin şimdiye dek Mars'ta suyun varlığı konusunda keşfettiği en kuvvetli kanıt olduğunun altını çizen Amerikalı bilimadamı, geçen ay Opportunity'nin kamerası ve röntgen spektormetresiyle mineral damarında yaptıkları analizin ardından, bunun kartonpiyer ve alçı yapımında kullanılan jips olduğuna kanaat getirdiklerini söyledi. Bileşiminde iki molekül kristal suyu olan kalsiyum sülfat, endüstride 'jips' olarak adlandırılıyor.</p> <p class="MsoNormal"> </p> <p class="MsoNormal">Squyres, "Kayada kırık vardı, su bu kırık boyunca akmış, sudaki jips çökelmiş, durum bundan ibaret" dedi.</p> <p class="MsoNormal"> </p> <p class="MsoNormal">Bu arada, keşiflerini sürdüren Opportunity'nin "ilerleyen yaşından" dolayı robot kolunun eklemlerinde "romatizma" benzeri bazı sorunlar baş göstermeye başlasa da, robotun hala çok iyi durumda olduğu belirtiliyor.</p> <p class="MsoNormal"> </p> <p class="MsoNormal">Hiç de eski bir robot gibi olmayan Opportunity, dondurucu Mars kışını geçirmek üzere gelecek aya kadar kendisi için en uygun yere kadar ilerlemek zorunda bulunuyor. Bilimadamları, robotun bu süre zarfında kendisini kapatmayacağını ve bu korunaklı yerde çevresindeki kayaları az da olsa hareket ederek incelemeye devam edeceğini belirtiyorlar.</p> <p class="MsoNormal"> </p> <p class="MsoNormal">Opportunity'nin ikizi Spirit adlı robotun devre dışı kaldığı daha önce açıklanmıştı. (NTVMSNBC)</p>