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NASA发现2颗超级地球，距离地球仅33光年，人类能移民了？那么，这两颗超级地球上是否存在外星生命呢？未来人类能否在这两颗行星上定居呢？ 这两颗行星都围绕着红矮星HD 260655运行。据初步观测 ...
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