Twelve black hole low-mass binaries orbiting Sgr A* at the center of the Milky Way galaxy, appear in this illustration provided by Columbia University, April 5, 2018. Their existence suggests there are likely about 10,000 black holes within just three light years of the Galactic Center. Columbia University/Handout via REUTERS

Black holes galore at centre of Milky Way

The findings provide insight into a fundamental aspect of galaxies