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出典:Wikipedia
出典:『Wikipedia』 (2010/12/01 15:05 UTC 版)
The MarsDial is a sundial that was devised for missions to Mars. It is used to calibrate the Pancam cameras of the Mars landers. MarsDials were placed on the Spirit and Opportunity Mars rovers, inscribed with the words "Two worlds, One sun" and the word "Mars" in 22 languages .
marsdial