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18 小时
这个著名的邻居恒星确定存在4颗类地行星
它的年龄约为100亿年,比我们的太阳(约46亿年)老得多。红矮星是银河系中最常见的恒星类型,比太阳小且凉爽,其光度较低,这意味着其宜居带(适合液态水存在的区域)比太阳系更靠近恒星。
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