A black hole with a mass much greater than the most massive stars (100 solar masses). The central regions of virtually every galaxy are thought to contain a supermassive black hole of a million solar masses or more. [More Info: Field Guide
A black hole that formed in the center of a galaxy and is a million to a billion times more massive than our Sun. How many black holes are there
A black hole possessing as much mass as a million or a billion stars. Supermassive black holes reside in the centers of galaxies and are the engines that power active galactic nuclei and quasars.
A supermassive black hole is a black hole with a mass of an order of magnitude between 10^5 and 10^{10} (hundreds of thousands and tens of billions) of solar masses. It is currently thought that most, if not all galaxies, including the Milky Way, contain supermassive black holes at their galactic centers.
"Supermassive Black Hole" is a song by English rock band Muse and is featured on their 2006 album, Black Holes and Revelations. It was released 19 June 2006 as the lead single from that album, accompanied by the B-side "Crying Shame" (see 2006 in British music). The song has been available online since 9 May following a radio premiere the previous day.