An international team of astronomers, including researchers from the IAC, have performed a unique cosmic test - measuring the mass of an ancient star using two entirely different methods, finding agreement to within just 1.4%. This result marks a milestone in our ability to determine the ages of old stars and use them as living fossils to study the Milky Way’s distant past. The team analysed the red giant in the binary system KIC 10001167 using two independent approaches: firstly, by measuring the brightness and radial velocity variations due to the orbital motion of the binary, and secondly

El Lehendakari del Gobierno Vasco, Imanol Pradales Gil, y el presidente del Gobierno de Canarias, Fernando Clavijo Batle, han visitado las instalaciones del Observatorio del Teide del Instituto de Astrofísica de Canarias (IAC) donde han sido recibidos por el director del centro, Valentín Martínez Pillet que ha estado acompañado por personal científico y técnico. Esta visita subraya el interés y la apuesta compartida por ambos gobiernos por la excelencia científica y la colaboración en proyectos de alta tecnología como los que abandera el IAC desde Canarias. Con dos de los observatorios más

The Instituto de Astrofísica de Canarias (IAC) in collaboration with the University of Geneva (Switzerland), the University of Osaka (Japan), and the University of Zhejiang (China) has made a key contribution to a more precise measurement of the expansion of the Universe. This is because they have made an improvement in the precision of the calculation of the scale of the universe in its early stages using the analisis of the distribution of gas in intergalactic space, measurements which reach back to epochs between 10,000 and 12,000 million years ago. This result comes from the análisis of