translation.en: Over the next few years, astronomers connected up their antennas to loudspeakers and learned about our radio sky, about Jupiter and the Sun, by listening.
translation.zh: 在后续数年间， 天文学家把天线连到扩音器上， 了解我们的无线电波的天空， 了解木星和太阳， 通过聆听。