2/13放送分
Feb 12, 2022•16 min
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Episode description
▽世界のバレンタイン
▽月についての質問
▽地球に衝突する小惑星は、どれくらいあるの？
▽世の中にズバッと切り込む「マッハの目で覗いてみた」！
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