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宇宙那么大，我们应该怎么看？
source link: https://zhuanlan.zhihu.com/p/36151078
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我从自己才刚入天文坑的时候就开始给人讲天文课，到如今恍然已经十多年了。尤其是四年前发起天文教育公益组织“青年天文教师连线”以来，为了帮我们这几十个教学点上好天文课，我和同事一直在琢磨，用什么工具才能…
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