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地球去流浪，比邻星是个好归宿吗？
source link: https://tech.sina.com.cn/d/s/2019-01-31/doc-ihqfskcp1985948.shtml
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来源：科技日报身边的天文学太阳，太阳系的“顶梁柱”，散发着生命赖以生存的光和热。你可曾想过，如果没有了太阳，地球的归宿将是哪里？科幻作家刘慈欣或许想过这个问题，他在科幻小说《流浪地球》中写到，当太阳生命走到尽头，人类唯一的生路是向外太空恒星
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