15. 1932年，在工程师卡尔·央斯基发现静电每天以规律
变化干扰他装备后，望远镜开始通过观测到无
电波，而不是可见光。
15. Telescopes that pick up radio waves, not visible light, got their start in 1932 when engineer Karl Jansky noticed that the static plaguing his equipment varied on a daily schedule.
