Weighing Supermassive Black Holes

Weighing supermassive black holes located in the center of galactic nuclei is more like looking through a solid brick wall, since matter in quantities of billions of times the mass of the Sun may stand in the way. Nonetheless, we are capable today to approximate the masses of supermassive bla... [ read more >> ]

Astronomers estimate the mass of the supermassive black hole in the center of Andromeda's galactic nucleus at about 200 million times that of the Sun. The galaxy itself has an arm outstretch of about 7 degrees

Image comment: Astronomers estimate the mass of the supermassive black hole in the center of Andromeda's galactic nucleus at about 200 million times that of the Sun. The galaxy itself has an arm outstretch of about 7 degrees
Image credits: T A Rector and B A Wolpa/NOAO/AURA/NSF

Astronomers estimate the mass of the supermassive black hole in the center of Andromeda's galactic nucleus at about 200 million times that of the Sun. The galaxy itself has an arm outstretch of about 7 degrees
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