Researcher Javier Moldón, from the Institute of Astrophysics of Andalusia (IAA-CSIC), is participating in the international collaboration “LOFAR Surveys,” a LOFAR Key Science Project that has published the largest map of the sky at very low frequencies obtained with this radio telescope. The survey opens a new window for studying a wide variety of astrophysical phenomena at the low-frequency end of the electromagnetic spectrum.