The above radar image was taken two days ago by the Deep Space Network radio telescope in Goldstone, California, USA.

上面的雷达影像在两天前，由位于美国加利福尼亚金石的深空网络雷达望远镜拍摄的。

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Abstract: in this article a new laser-radar ranging equation is deduced. This equation takes into consideration the tracking jitter of a telescope and the beam jitter caused by atmosphere turbulence.

摘要：考虑望远镜存在跟踪随机抖动及大气湍流引起的光斑抖动等因素，推导出新的激光测距方程。

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Much of the work is done by Cornell University's Arecibo radar-telescope in Puerto Rico, which is facing federal funding cuts.

ECONOMIST: The ultimate environmental catastrophe