来源：央视新闻客户端 | 2022-03-23 19:45:04 |
星空浩瀚无比，探索永无止境。今天下午，中国空间站“天宫课堂”开展第二次太空授课活动，继续采取天地对话方式进行。
在“四季如春”的空间站里，也可以进行冰雪实验？刚刚，在中国空间站，王亚平老师利用过饱和乙酸钠溶液，制作了一颗“冰球”。这个液体球虽然长得像冰球其实是热球，背后是什么原理呢？戳视频↓
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