EPISODE · Jun 5, 2026 · 6 MIN
2026.06.05《地球年龄的秘密》
from 每日AI地理
科学家没钻到地心，怎么知道地球46亿岁？靠陨石和岩石里的“原子钟”——铀衰变成铅，测比例算时间。今天聊聊这个“给地球算年龄”的方法。前往小宇宙评论区与主播互动
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2026.06.05《地球年龄的秘密》
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