The Spanish academic and research network that provides advanced communications services to the national scientific and university community, RedIRIS, collaborates with Gaia space mission with a network infrastructure based on Optical fiber, interconnected to the pan-European academic network GEANT, that allows the global transmission of all the information generated by the project.

Currently Gaia's biggest challenge is the compilation and processing of the huge amount of information produced. Every day the satellite generates and sends to the Earth 50 gigabytes data, received by 3 antennas, one of them located in Cebreros, Ávila, that must be processed.

RedIRIS highlights, for this final phase, the role of the researchers of the Institute of Cosmos Sciences of the University of Barcelona, ICCUB, that deal with the simulations and the construction of the data archive collaborating with the University Services of Catalonia (CSUC) and the Barcelona Supercomputing Center (BSC). The ICCUB has worked in the mission since its beginning, contributing to define some elements of the satellite and of the software for data processing.