(首图为示意图,来源:AI 生成)
【文‧Emmastein】
拥有“戴森球”技术的文明比地球还要高等,根据一篇新研究,科学家指出银河系至少有七颗恆星被戴森球包围,未来利用韦伯太空望远镜等强大仪器对这些恆星进行后续观测,或许有机会找到智慧外星生命迹象。
戴森球(Dyson
Sphere)是一种包围恆星的假想巨大球形结构,用途为捕捉恆星大部分或全部能量输出,理论认为,这是高等智慧文明对无尽能量需求的技术走向之一,且需卡尔达肖夫指数定义的
II 型文明以上才有建造这种结构的技术。(目前地球技术连 I 型文明都未达标)
虽然科学家还在争论银河系是否有文明已先进到足以建造如此庞大结构,但发表在《皇家天文学会月报》的一篇新研究认为,若确实有恆星周围被戴森球包覆,来自恆星的热量会导致戴森球升温、发出过量红外线辐射(IEE),而人类现有技术能发现这种迹象。
来自瑞典、印度、英国和美国的研究人员们开发出一种特地方法识别戴森球,从 Gaia、2MASS、WISE 等卫星数据中检查逾 500
万颗恆星是否存在 IEE 现象,确定七颗有力候选恆星。论文强调,这些恆星全都是 M 型恆星,且皆距离地球 1,000
光年以内。
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