295：银河系到底长啥样？
· 56 min
Episode 295：银河系到底长啥样？
0:00
55:32
银河系究竟长啥样呢？这个可是一个历史久远的挠头问题……由中、美、德三国天文学家领导的国际团队历经15年研究，绘制出迄今最精确的银河系结构图！在威廉·赫歇尔首次绘制银河系结构235年后，我们终于搞清楚自己的“小区”是什么样子了。
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