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Two washing-machine-sized satellites recently went into orbit around the moon. In March, they’ll start to gather detailed data about the quirks of the moon’s gravity. The working names for the satellites have been GRAIL A and B, for Gravity Recovery and Interior Laboratory. But they just got new names—courtesy of fourth graders from Bozeman, Montana.
NASA invited U.S. students to submit essays with suggested names. The Bozeman entry was picked out of more than 900 schools representing 11,000 students. The winners impressed the judges with their careful research about the goal of the mission. Because the moon’s gravity gives us our tides, the kids suggested GRAIL A and B’s new handles: Ebb and Flow.
子们是在对这两颗卫星的使命进行了仔细研究之后给它们取得名字——这给评判人员留下了很深的印象。因为月球引力使地球上出现潮汐现象，因此孩子们建议给GRAIL A和GRAIL B分别命名为“潮落”（Ebb）和“潮起”(Flow)。
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