Radio was the first band in which we could study the universe outside the visible wavelengths. The radio sky seemed nothing like the optical sky that we knew for millennia. With time, astronomers were able to figure out why this was so, and in the process, discovered entirely new kinds of objects in our universe, and still continue to do so. These advances were made possible primarily due to the technique of radio interferometry that allowed us to achieve resolutions that optical astronomers can only dream of. In this talk, we will discuss this remarkable journey of radio astronomers, and end with looking at ways in which amateur radio astronomy is rapidly coming into its own.