Record breaker! Milky Way's most monstrous stellar-mass black hole is sleeping giant lurking close to Earth 

 Astronomers have discovered the most massive stellar-born black hole ever seen in the Milky Way, and it lies relatively close to Earth. 

https://cdn.mos.cms.futurecdn.net/XDmeMfSQYdxGJYXFXYPY3i.png

https://www.space.com/milky-way-biggest-stellar-mass-black-hole-gaia