A team of cosmologists from the Institute of Astrophysics of Andalusia (IAA-CSIC) and the Institute of Astrophysics of the Canary Islands (IAC) has obtained the most accurate census to date of the dark matter halos of the Universe. The work is based on the development of a new model, called GPS+, capable of predicting how many dark matter halos exist at each stage of cosmic history. In the universe, there are enormous invisible structures surrounding galaxies and galaxy clusters. These are dark matter halos, concentrations of matter that do not emit light and cannot be directly observed, but

The largest observation program of the James Webb Space Telescope (JWST) has released its data: nearly 800,000 galaxies observed in unprecedented detail. COSMOS-Web thus offers the most extensive and deepest view of the universe ever obtained. In this data release, the Instituto de Astrofísica de Canarias (IAC) has played a key role, performing the morphological classification of more than half a million galaxies using neural networks, a crucial contribution to explore how galaxies form and evolve over cosmic time. COSMOS-Web was the largest General Observer program selected for Cycle 1 of