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围绕银河系发现4个黯淡小星系:或为宇宙最古老星系

 5 years ago
source link: https://tech.sina.com.cn/d/s/2018-08-21/doc-ihhxaafz6763490.shtml
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新浪科技讯北京时间8月21日消息,据国外媒体报道,天文学家发现围绕银河系运转的4个小型星系,这些星系可以追溯到130亿年前,在大爆炸之后不久就出现了,可能是宇宙中最古老的星系。这些矮星系(又称为卫星星系)通过引力作用环绕着银河系,就像月球与

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