地球能活多久太阳系绕银河系旋转,每1.5亿年转一圈;银河系有4个旋臂,其中由无数颗恒星、行星组成.太阳系在四个旋臂中穿梭,大约7千万年在旋臂内,8千万年在旋臂外.当太阳系穿越旋臂时,危
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/17 03:37:22
![地球能活多久太阳系绕银河系旋转,每1.5亿年转一圈;银河系有4个旋臂,其中由无数颗恒星、行星组成.太阳系在四个旋臂中穿梭,大约7千万年在旋臂内,8千万年在旋臂外.当太阳系穿越旋臂时,危](/uploads/image/z/6535055-47-5.jpg?t=%E5%9C%B0%E7%90%83%E8%83%BD%E6%B4%BB%E5%A4%9A%E4%B9%85%E5%A4%AA%E9%98%B3%E7%B3%BB%E7%BB%95%E9%93%B6%E6%B2%B3%E7%B3%BB%E6%97%8B%E8%BD%AC%2C%E6%AF%8F1.5%E4%BA%BF%E5%B9%B4%E8%BD%AC%E4%B8%80%E5%9C%88%EF%BC%9B%E9%93%B6%E6%B2%B3%E7%B3%BB%E6%9C%894%E4%B8%AA%E6%97%8B%E8%87%82%2C%E5%85%B6%E4%B8%AD%E7%94%B1%E6%97%A0%E6%95%B0%E9%A2%97%E6%81%92%E6%98%9F%E3%80%81%E8%A1%8C%E6%98%9F%E7%BB%84%E6%88%90.%E5%A4%AA%E9%98%B3%E7%B3%BB%E5%9C%A8%E5%9B%9B%E4%B8%AA%E6%97%8B%E8%87%82%E4%B8%AD%E7%A9%BF%E6%A2%AD%2C%E5%A4%A7%E7%BA%A67%E5%8D%83%E4%B8%87%E5%B9%B4%E5%9C%A8%E6%97%8B%E8%87%82%E5%86%85%2C8%E5%8D%83%E4%B8%87%E5%B9%B4%E5%9C%A8%E6%97%8B%E8%87%82%E5%A4%96.%E5%BD%93%E5%A4%AA%E9%98%B3%E7%B3%BB%E7%A9%BF%E8%B6%8A%E6%97%8B%E8%87%82%E6%97%B6%2C%E5%8D%B1)
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