エクスプローラー8号
1. Explorer 8Explorer 8 was a U.S. research satellite launched on November 3, 1960. It confirmed the existence of a helium layer in the upper atmosphere. Explorer 8 decayed from orbit on 28 March 2012.
Read “Explorer 8” on English Wikipedia
Read “エクスプローラー8号” on Japanese Wikipedia
Read “Explorer 8” on DBpedia
Read “Explorer 8” on English Wikipedia
Read “エクスプローラー8号” on Japanese Wikipedia
Read “Explorer 8” on DBpedia
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