Monday, December 12, 2011
NGC 3842 (upper left) is the brightest galaxy in a rich cluster of galaxies. The black hole at its center (shown in middle as artist's concept) is surrounded by stars distorted by its immense gravitational field. The black hole, which is seven times larger than Pluto's orbit, would dwarf our solar system (inset).
Image by: Pete Marenfeld / UC Berkeley