"Unveiling the 3D Map of 1.3 Million Black Holes in the Universe"

A 3D map of over 1.3 million quasars, called "Quaia," has been created using data from the Gaia astrometric space mission, providing insights into the distribution and density of matter in the universe. Quasars, powered by supermassive black holes, serve as valuable guides for cosmological mapping and are located within the densest clumps of dark matter. By comparing the Quaia map with the cosmic microwave background, scientists have verified the distribution of matter in the early universe, offering new constraints on our understanding of cosmic history. This groundbreaking map, published in The Astrophysical Journal, covers the largest volume of the universe to date and presents a significant advancement in astrophysical research.