Galactic Center of the Milky Way

astronomy black hole celestial body chandra telescope chandra x ray observatory chandra composite cosmography cosmology deep sky deep space forming star galactic center galactic centre galactic core galaxy interstellar space microwave milky way galaxy milky way mosaic nebula radiation sagittarius a* sagittarius a star sagittarius sgr a* space dust space gas star formation star system star stellar wind supermassive black hole supernova supernovae universe x ray light