Henize 2-10 is a dwarf galaxy, and it is the first dwarf galaxy ever discovered to contain a supermassive black hole at its center. This was surprising because the black hole is about one quarter of the size of the one at the center of the Milky Way Galaxy. However, Henize 2-10 is only about1/1,000th the size of the Milky Way..
This image combines x-ray (Chandra), visible light (Hubble), and radio telescope (Very Large Array) views.
Image Credit: NASA / NRAO