This Saturday, 29 March 2025, the Instituto de Astrofísica de Canarias (IAC) was able to follow the partial solar eclipse from the Teide Observatory in Tenerife. Although subtle to the naked eye, this eclipse was used by the IAC's outreach team to raise awareness of the phenomenon among a group of people from the ‘Friends of the IAC’ programme and IAC staff. At the same time, an observation was also made from the IAC Headquarters in La Laguna, which could be seen live on the centre's YouTube channel. The eclipse began at 09:14 UT and ended at 10:56 UT, with its maximum at 10:03 UT. For just

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 Observatorio del Teide recibe este fin de semana a cerca de 1.000 visitantes en sus tradicionales Jornadas de Puertas Abiertas, organizadas por el Instituto de Astrofísica de Canarias (IAC) con motivo del solsticio de verano. Esta iniciativa, ya consolidada en el calendario divulgativo del IAC, ofrece a la ciudadanía la oportunidad de acercarse a la ciencia y a las infraestructuras científicas de Canarias de forma directa y cercana. La actividad está coordinada conjuntamente por el propio Observatorio y por la Unidad de Comunicación y Cultura Científica (UC3) del IAC, en el marco de las