It is no accident that our vision is tuned to perceive wavelengths the 600nm to 380nm range. If you look at the wavelengths that penetrate our atmosphere and at the strongest wavelengths radiated by the sun, this is the optimal place to evolve vision. Our atmosphere blocks many wavelengths of radiation from reaching the surface of the earth. But the radio wavelength are nearly all passed. Because radio waves pass through dust on other denser materials, it is an ideal tool to see into the heart of galaxies and into the dust obscured regions where stars are forming.