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

Researchers from the Instituto de Astrofísica de Canarias (IAC), in collaboration with the Instituto de Ciencias del Cosmos de la Universidad de Barcelona (ICCUB) and the Instituto de Estudios Espaciales de Cataluña (IEEC), have carried out the largest observational study to date on massive runaway stars including rotation and binarity in the Milky Way. This work, recently published in Astronomy & Astrophysics , sheds light on how these stellar “fugitives” are launched into space and what their properties reveal about their intriguing origins. Runaway stars are stars that travel through

An international team, with participation from the University of La Laguna (ULL) and the Instituto de Astrofísica de Canarias (IAC), have, for the first time, captured a detailed snapshot of planetary systems in an era long shrouded in mystery. The study, called ALMA survey to Resolve exoKuiper belt Substructures (ARKS) , is based on a series of 10 articles published simultaneously in the journal Astronomy and Astrophysics and was carried out using the Atacama Large Millimetre/submillimetre Array (ALMA) . Thanks to this work, the sharpest images ever of 24 debris disks, the dusty belts left