Radio astronomy is the study of celestial objects that emit radio waves. Using this technology, scientists can study astronomical phenomena that would otherwise be invisible. The Very Large Array is a renowned set of radio dishes in Sorocco, New Mexico, which work together as one massive antenna to scan the skies and help us learn more about the universe. Objects that are commonly studied include radio galaxies, quasars, pulsars, supernova remnants, gamma ray bursts, radio-emitting stars, the sun and planets, astrophysical masers, black holes, and the hydrogen gas that constitutes a large portion of the Milky Way galaxy.
The Array was also used for talking to distant spacecraft probes which are part of the Voyager program, a project that I have been fascinated with for a long time after hearing about its accomplishment of being responsible for sending the first man-made object outside of our solar system. Voyager 1 is just breaching the Heliopause border after travelling a million miles a day since its launch in 1977.