An international scientific team, involving the University of La Laguna (ULL) and the Instituto de Astrofísica de Canarias (IAC), has identified the cause of an unusually long dimming of a distant star . The phenomenon is explained by the passage of a substellar object with a giant ring system, similar to a ‘cosmic saucer’, in front of the host star. The star, named ASASSN-24fw, is located in the Monoceros constellation at about 3,000 light-years away from Earth. The star faded steadily for more than nine months between late 2024 and mid-2025 to about 97% dark before returning to its normal

The PLATO (PLAnetary Transits and Oscillations of Stars) space mission, led by the European Space Agency (ESA), has recently completed one of the most delicate phases of its development: the integration of its main components, the 26 scientific cameras and the service module that houses all the instrument's acquisition, processing, and control electronics. This stage, carried out at the facilities of the aerospace company OHB in Germany, marks a fundamental step toward the launch scheduled for December 2026 from French Guiana aboard an Ariane 6 rocket. “Almost eight years after ESA gave the

The Instituto de Astrofísica de Canarias (IAC) is actively participating in the observation of object 3I/ATLAS (C/2025 N1 ATLAS), initially included as A11pl3Z in the confirmed list of Near-Earth Objects (NEOs) of the International Astronomical Union's Minor Planet Centre (IAU/MPC). The object, which has been shown to be the third interstellar object detected in our solar system, was discovered by one of the telescopes in the ATLAS network for the detection and early warning of asteroids on an Earth-impact trajectory. The IAC is part of this network with its new telescope structure, ATLAS