1991年8月23日：水星上的水

1991年8月，加州理工学院与喷气推进实验室的科学家利用戈尔德斯通深空通信综合体的碟形天线对水星进行了雷达观测。此次观测旨在绘制水星表面未被水手号探测器拍摄区域的雷达地图。

On Aug. 8 and Aug. 23, 1991, scientists from CalTech and the Jet Propulsion Laboratory turned the 70-meter dish antenna at the Goldstone Deep Space Communications Complex on Mercury. The goal was to produce a radar map of the portions of Mercury not photographed by Mariner 10 during its 1974-75 flybys. But to the researchers’ Continue reading "Aug. 23, 1991: Water on Mercury" The post Aug. 23, 1991: Water on Mercury appeared first on Astronomy Magazine .