The Universe is expanding faster and faster. But astronomers still don't know exactly why. Now the DES (Dark Energy Survey) collaboration has taken another step towards solving this enigma. For the first time have published results These measurements combine data from the two main sources available for measuring the expansion of the Universe: the clustering of galaxies and how they deflect light through gravitational lensing. The analysis provides more precise estimates of the Universe's composition and brings scientists closer to solving this puzzle.

Dark energy fills the entire Universe and determines its expansion rate. Now, data from more than 15 million galaxies and quasars, the DESI (Dark Energy Spectroscopic Instrument) experiment, in which Catalonia participates heavily, reveal that this type of energy could have varied over time.