询问天文高手几个问题.1 - 太阳系诞生之初各大行星是否就都如现在的颜色?2 - 土星与木星是否为内太阳系阻挡过为数不少的陨石的侵袭?3 - 银河系的外观是否在五十亿年前和现在一样?4
来源:学生作业帮助网 编辑:作业帮 时间:2024/09/09 15:12:02
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