From chandraxray https://twitter.com/chandraxray on Twitter: DYK if a black hole had the same mass as Earth, it would fit in the palm of your hand? Our Sun is about 333,000 times the mass of Earth. The black hole at our galaxy's center is a bit more massive still roughly 4 million times the mass of the Sun! http://chandra.si.edu/photo/2013/sgra_gas/ https://twitter.com/chandraxray/status/945715707093962752/photo/1 https://chirp.cooleysekula.net/attachment/46312