To catch these waves, radio telescopes usually have huge antennas.
为了捕捉这些电波，电波望远镜通常都有巨大的天线。
2
The other part of the project is an undirected search which is monitoring all of space with a lower sensitivity, using the smaller antennas of NASA's Deep Space Network.
该项目的另一部分是无定向搜索，使用 NASA 深空网络的小型天线，以较低的灵敏度监测所有空间。
3
Most antennas are made in the shape of a dish to collect and reflect the radio waves to the sub reflector, in the same way as a curved mirror focuses visible light to one point.