加载中…美国国家航空航天局探测器绘制出最精确月球重力图
(2012-12-13 13:21:16)
标签：
新闻稿重力中央资料不一样杂谈 |
分类： 科学与技术 |
http://photos.state.gov/libraries/amgov/3234/Week_1/12062012_grail20121205-43-600.jpg
美国国家航空航天局的双子绕月探测器已绘制出任何天体中分辨率最高的重力图。
美国国家航空航天局的双子绕月探测器已绘制出任何天体中分辨率最高的重力图。
这幅新的由“重力恢复与内部实验室”（Gravity Recovery and Interior Laboratory， GRAIL）任务组绘制的重力图让科学家得以了解有关月球内部结构和组成的前所未有的细节。从这两个洗衣机大小的航天器发回的数据也将使人们对于地球及其他岩石类行星在太阳系中如何形成和演化有一个更好的了解。
图为从蓝、黄到红色的引力强度标识。
这幅重力图揭示了大量前所未见的细节特点，如构造结构、火山地貌、盆地环状构造、陨石坑中央隆起，以及无数简单的碗状陨石坑。数据还显示，月球的重力场与太阳系中的任何类地行星的重力场都不一样。
有关这幅新的重力图的资料，请查阅美国国家航空航天局新闻稿。
Read more: http://iipdigital.usembassy.gov/st/chinese/inbrief/2012/12/20121211139830.html#ixzz2EuGJkdGl
NASA Probes Create Most Accurate Moon Gravity Map
http://photos.state.gov/libraries/amgov/3234/Week_1/12062012_grail20121205-43-600.jpg
Twin NASA probes orbiting Earth’s moon have generated the highest-resolution gravity map of any celestial body.
Twin NASA probes orbiting Earth’s moon have generated the highest-resolution gravity map of any celestial body.
The new map, created by the Gravity Recovery and Interior Laboratory (GRAIL) mission, is allowing scientists to learn about the moon’s internal structure and composition in unprecedented detail. Data from the two washing machine–sized spacecraft also will provide a better understanding of how Earth and other rocky planets in the solar system formed and evolved.
In this image, gravity strength runs from blue through yellow to red.
The gravity map reveals an abundance of features never before seen in detail, such as tectonic structures, volcanic landforms, basin rings, crater central peaks and numerous simple, bowl-shaped craters. Data also show the moon’s gravity field is unlike that of any terrestrial planet in the solar system.
For more on the new map, see the NASA press release.
Read more: http://iipdigital.usembassy.gov/st/english/inbrief/2012/12/20121206139648.html#ixzz2EuGL3xv9
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