The discovery, made in collaboration between the IAC Solar System Group and Light Bridges, reveals the rotation period of comet 3I/ATLAS The Two-metre Twin Telescope (TTT) has made a pioneering discovery in astronomy: the first detection of a jet of gas and dust and its periodic modulation in an interstellar comet, 3I/ATLAS. The study, published in the journal Astronomy & Astrophysics, provides the first evidence of localised activity from an interstellar nucleus, offering unique insight into the nature of a celestial body that formed outside our Solar System. An extraordinarily normal

From Thursday, May 8th, to Friday, May 9th, the Canary Islands Institute of Astrophysics (IAC) is hosting the meeting of the Research Advisory Committee (CAI). This is the center's highest advisory body on research and analyzes its scientific and technological output. At this meeting, the director, Valentín Martínez Pillet, will present the center's main scientific and technological milestones, as well as a proposal for future lines of action. The director will also be joined by Eva Villaver, deputy director of the IAC; Romano Corradi, director of Gran Telescopio Canarias; Jonay González

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