APOD090813：火星上的石块岛陨石
本帖最后由 gohomeman1 于 2009-12-18 16:37 编辑http://apod.nasa.gov/apod/ap090813.html
2009 August 13
Block Island Meteorite on Mars
http://apod.nasa.gov/apod/image/0908/blockmars_opportunity.jpg
Credit: Mars Exploration Rover Mission, JPL, NASA
Explanation:
What is this strange rock on Mars? Sitting on a smooth plane, the rock stands out for its isolation, odd shape, large size and unusual texture. The rock was discovered by the robotic Opportunity rover rolling across Mars late last month. Pictured, Opportunity prepares to inspect the unusual rock. After being X-rayed, poked, and chemically analyzed, the rock has now been identified by Opportunity as a fallen meteorite. Now dubbed Block Island, the meteorite has been measured to be about 2/3 of a meter across and is now known to be composed mostly of nickel and iron. This is the second meteorite found by a martian rover, and so far the largest. Vast smooth spaces on Mars and Earth can make large meteorites stand out. Opportunity continues its trip across Meridiani Planum on Mars and is on schedule to reach expansive Endeavour Crater next year. 北京天文馆的翻译和大图
http://www.bjp.org.cn/apod/2009-08/13/content_9475.htm
http://www.bjp.org.cn/files/2009-08/13/F_e21206af3f944309ad43bf817fe01885_blockmars_opportunity_big.jpg
火星上的石块岛陨石
影像提供：Mars Exploration Rover Mission, JPL, NASA
说明：
火星上这块奇怪的石头是什么？石头位于平滑的地面上，孤独地躺在那里，形状奇特，块大而且质地非同寻常。这块石头是由上个月末，机遇号探测器穿越火星表面时发现。在上面影像里，机遇号正准备检测这块石头。在经过X射线，触碰以及化学分析后，机遇号探测器确定这块岩石就是飞落下来的陨石。该陨石被称为石块岛，经测量该陨石大约有2/3米宽，大部分由镍和铁构成。这是火星探测器发现的第二颗陨石，也是最大的一颗。火星和地球上巨大的空地很容易让陨石凸显出来。机遇号继续着自己穿越子午圈平面之旅，预计将在明年达到Endeavor陨石坑。 要是能把这块陨石运到地球就好了！ 会不会密度很高很重啊 ::070821_15.jpg::捡一块玩玩 ::070821_15.jpg::捡一块玩玩 LS怎么回了两次？
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