Astronomers have created Quaia, the largest 3D map of the universe, charting 1.3 million quasars.

Quaia is notable for mapping the largest volume of the Universe, rather than the highest number of quasars.

The data for the Quaia catalogue is sourced from the ESA's Gaia spacecraft, which precisely maps about one billion Milky Way objects.

The catalogue's quasar distribution aids in understanding dark matter distribution and studying the cosmic web.

Comparing the quasar map with the Cosmic Microwave Background offers insights into dark matter's relationship with quasars and matter clustering.

The research, published in The Astrophysical Journal, supports testing theories of the Universe's composition and evolution.

Quaia's completeness surpasses that of other catalogues, like the Sloan Digital Sky Survey's DR16Q, and it is currently in use for various cosmic studies.