Quasars are ‘cosmic signposts’ pointing to rare supermassive black hole pairs
Quasars, the brightest objects in the universe, could act as cosmic signposts, directing astronomers to elusive pairs of supermassive black holes. Although scientists are aware that supermassive black holes with masses millions or even billions of times that of the sun reside at the hearts of most, if not all, large galaxies, binary pairs of … Read more