2015年6月2日 星期二

Shadow of Surveyor 1 on the Moon


Surveyor 1, the first of the Surveyor missions to make a successful soft landing, proved the validity of the spacecraft's design and landing technique. In addition to transmitting more than 11,000 pictures, Surveyor sent information on the bearing strength of the lunar soil, the radar reflectivity and temperature. via NASA http://ift.tt/1I9sRr5

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