Astronomical observations constitute another major avenue for research in fundamental physics, in particular in what concerns the determination of the nature of dark energy that is accelerating the expansion of our universe.  

In the observational cosmology research line we participate in the DES and PAU experiments and are preparing our participation in the future DESI experiment.  These experiments map millions of galaxies with the aim of exploring the accelerated expansion of the universe by measuring the 14-billion-year history of cosmic expansion with high precision.

We also participate in astrophysics-related projects such as the ESTALLIDOS (starbursts) project that studies the role starburts in galaxy formation and evolution.