With the help of machine-learning techniques, a team of astronomers has discovered a dozen quasars that have been warped by a naturally occurring cosmic “lens” and split into four similar images. Quasars are extremely luminous cores of distant galaxies that are powered by supermassive black holes.
Click here for original story, Machine-learning methods lead to discovery of rare ‘quadruply imaged quasars’
Source: Phys.org