没有对比就没有伤害IV

[视频作者] 正经的知识

[视频时长] 0:52

[视频类型] 科学科普

参考：https://www.nature.com/articles/s41598-017-18398-4 https://en.wikipedia.org/wiki/Weightlessness https://www.thoughtco.com/can-a-candle-burn-in-zero-gravity-604301 https://www.washingtontimes.com/news/2014/oct/12/exchange-150-year-old-tomato-seeds-unear