The Galactic Centre and Sagittarius B2
via eso.org
Colour-composite image of the Galactic Centre and Sagittarius B2 as seen by the ATLASGAL survey. The centre of the Milky Way is home to a supermassive black hole more than four million times the mass of our Sun. It is about 25 000 light years from Earth. Sagittarius B2 (Sgr B2) is one of the largest clouds of molecular gas in the Milky Way. This dense region lies close to the Galactic Centre and is rich in many different interstellar molecules.
From http://www.eso.org/gallery/v/ESOPIA/Nebulae/phot-24e-09-fullres.tif.html
