Ripples in fabric of space-time? Hundreds of undiscovered black holes

Computer simulations of a spherical collection of stars known as 'NGC 6101' reveal that it contains hundreds of black holes, until now thought impossible. Recent observations already found black hole candidates in similar systems, with this research enabling astrophysicists to map black holes in other clusters. These systems could be the cradle of gravitational wave emission, 'ripples' in the fabric of space-time. from Latest Science News -- ScienceDaily via IFTTT