Astronomers have long been trying to find out what is located in the center of the Galaxy. The star dust, of which the Galaxy is composed, disturbs the observations and radiation measurements. It is believed that in the Galactic Center is a black hole, but it has not been proven yet.
This black hole with the mass of 2-3 million times larger than our Sun, is located in the sector Sgr A (the name comes from the abbreviation for Sgr Sagittarius, because the center of the Milky Way lays in the direction of the constellation Sagittarius). This is a radio telescope picture of the Galactic Center obtained by the Naval Research Laboratory, Washington, DC.