Using a number of radio receiving techniques, an astronomer can observe many interesting emissions from distant celestial objects such as Pulsars or closer natural interactions within the earth’s magnetic field, solar flares and radio storms on Jupiter.
Further, since radio waves penetrate dust, radio astronomy can be used to study regions of the sky that are not visible to conventional optical telescopes, such as the dust-shrouded regions where stars and planets are born, and the centre of our own Galaxy the Milky Way.