《每日邮报》2014年1月8日的火星研究照片
本帖最后由 人与自然 于 2014-1-12 17:13 编辑http://www.dailymail.co.uk/sciencetech/article-2535708/Blueberries-Mars-Stunning-images-red-planet-taken-Spirit-Opportunity-rovers-revealed-new-exhibition.htmlThe discovery of Martian clusters, known as ‘blueberries’, a decade ago provided some of the first evidence of liquid wateron the red planet.
This incredible close up, taken by the MarsRover Opportunity, reveals these spheres embedded in Martian rock likeblueberries in a muffin.
The image is part of an exhibition by theSmithsonian's National Air and Space Museum presenting more than 50 of the bestphotographs from two rovers known as Spirit and Opportunity.
http://i.dailymail.co.uk/i/pix/2014/01/08/article-2535708-1A7A921B00000578-627_964x956.jpgThese hematite-rich spherules were embedded in thisMartian rock like blueberries in a muffin and released over time by erosion. TheMars Rover Opportunity found this cluster at its Eagle Crater landing site andanalysed their composition with its spectrometers. Hypotheses about theirformation have contributed to the story of water on Mars火星蓝莓火星上究竟是否存在生命体呢？数十年来，科学家们一直在探索这个问题却未能找到答案。综合外国媒体9月16日报道，火星探测器“机遇”号最近的重大发现——“蓝莓”状物质——或许可以帮助科学家揭开这一谜题。
这种“蓝莓”状物质是小赤铁矿球，直径约3毫米，发现于“机遇”号在火星的着陆地点。最初，专家只是认为它们可以证实火星上曾经有液态水。不过来自西澳大利亚大学和内布拉斯加大学的研究人员通过研究证实，这些物质可能还表明火星上存在过生命体：因为根据他们的研究，地球上相似的氧化铁球是由微生物形成的。如果这一结论适用于火星，那么该星球肯定也有微生物存在过。
这些研究人员借助高分辨率电子显微镜，分析了取自地球上一些沙滩和沙漠的“蓝莓”状物质的生物特征，并将得出的相关结论发表在了8月份的《地质学》杂志上。
之前有关“蓝莓”状物质的研究表明，它们是通过化学反应形成的。而最新的分析显示，微生物是它们形成的关键部分。根据这些理论或许可以推测，这些“蓝莓”状物质不仅可以证明液态水，还能证明很早以前生命体在火星上存在过。
http://www.chinadaily.com.cn/hqzx/2012-09/17/content_15761473.htm
Ten years after Nasa landed the two rovers onMars for a 90-day mission, one is still exploring, and the project has generatedhundreds of thousands of images from the planet's surface.
The Mars Rover Opportunity found this'blueberry' cluster at its Eagle Crater landing site and analysed thecomposition with its spectrometers. Previous theories suggested they were createdby simple chemical reactions without the help of life. However, research lastyear revealed clear evidence that microbes were essential in theirformation.
This raised the possibility that Martian ‘blueberries’ may not only reveal that water was present on Mars - butalsoancient microbial life.
http://i.dailymail.co.uk/i/pix/2014/01/08/article-2535708-1A7A922900000578-221_964x699.jpg
A view by the Mars Rover Spirit of a sunset over the rimof Gusev Crater, about 80 km (50 miles) away. Taken from Husband Hill, it looksmuch like a sunset on Earth, a reminder that other worlds can seem eerilyfamiliar. Sunset and twilight images help scientists to determine how high intothe atmosphere the Martian dust extends and to look for dust or iceclouds火星夕阳，有一种大漠落日圆的感觉
‘Spirit and Opportunity: 10 Years RovingAcross Mars’, curated by the scientists who have led the mission, opens tomorrowin Washington.
Along with unusual ‘blueberry’ clusters, itincludes large-scale photographs of craters, hills, dunes, dust clouds,meteorites, rock formations and the Martian sunset.
John Grant, a planetary geologist at themuseum who is part of the rover mission team, organised the exhibition, in partas a travel log with images on one side from Sprit and images from Opportunityon the other.
The rovers landed in January 2004 on oppositesides of Mars and began exploring volcanic deposits and plains, as well asmeteorites and impact craters.
http://i.dailymail.co.uk/i/pix/2014/01/08/article-2535708-1A7A921300000578-403_964x559.jpgRover tracks are shown disappearing toward the horizonin a sea of sand between the craters Endurance and Victoria on the MeridianiPlains. Mars rover Opportunity took the image while stuck in the sand ripple,dubbed Purgatory, for over a month火星车轨迹
http://i.dailymail.co.uk/i/pix/2014/01/08/article-2535708-1A79F64300000578-340_964x632.jpgA wheel that was used to test the Mars ExplorationRovers on Earth before their mission is also on display. After about 800 days,one of Spirit's front wheels stalled and stopped functioning. The engineeringteam decided to continue driving it in reverse, dragging the broken wheel acrossthe Martian surface火星车的车轮
Every one of the images you see here tells astory of discovery that goes along with the story of beauty on Mars,’ Dr Grantsaid.
It's a look at an alien planet through therovers' eyes.’
Uncovering signs of the past presence ofwater and a more habitable environment are among the rovers' most importantdiscoveries. Some were made by accident.
After about 800 days, one of Spirit's frontwheels stalled and stopped functioning. The engineering team decided to continuedriving it in reverse, dragging the broken wheel across the Martian surface.
That dragging dug a trench behind the roverthat soon uncovered a new material as white as snow.
http://i.dailymail.co.uk/i/pix/2014/01/08/article-2535708-1A7A921700000578-990_964x944.jpgThis piece of metal with the American flag on it is madeof aluminum recovered from the site of the World Trade Center towers in New YorkCity. It is located on Mars Rover Spirit and serves as a cable guard for Spirit,a s a rock abrasion tool as well as a memorial to the victims of theSeptember 11, 2001, terrorist attacks. Mars Rover Opportunity has an identicalpiece火星车上的铝制美国国旗，有一部分是因911而倒塌的纽约世贸大厦的建筑铝构件打造而成
http://i.dailymail.co.uk/i/pix/2014/01/08/article-2535708-1A79DA6100000578-906_964x677.jpgCornell University Astronomy Professor Steve Squyres(right) and NasaPlanetary Science Division Director Jim Green (left) look at the'Spirit and Opportunity: 10 Years Roving Across Mars'科学家们正在研究火星车轨迹
http://i.dailymail.co.uk/i/pix/2014/01/08/article-2535708-1A79DB4500000578-770_964x638.jpgUncovering signs of the past presence of water and amore habitable environment are among the rovers' most important discoveries.Some were made by accident. Steve Squyres (left) and Jim Green (right) discusssome of the findings
http://i.dailymail.co.uk/i/pix/2014/01/08/article-2535708-1A79DA2A00000578-219_964x699.jpgCornell University Astronomy Professor and principalinvestigator of the Mars Exploration Rover Mission, Steve Squyres looks at the'Spirit and Opportunity: 10 Years Roving Across Mars' exhibition at theSmithsonian National Air and Space Museum on the National Mall January 7, 2014in Washington, DC. The collection of images from both the Spirit and Opportunityrovers marks the 10th anniversary of the rover landings, which occurred onopposite sides of Mars in January 2004
{:soso_e179:}先来帮顶一个 诡异沙漠。 牛········· 研究邻居呢。 厉害 火星夕阳，苍凉浑厚。
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