The Technical Office for the Protection of the Quality of the Sky (OTPC) of the Instituto de Astrofísica de Canarias (IAC) is collaborating with the engineers of Aena so that the exterior lighting of the Tenerife South Airport incorporates the recommendations of the Institute, in order to preserve the astronomical quality of the Canary Observatories. Aena keeps in close touch with this department of the IAC so that the new exterior lighting of Tenerife South Airport conforms to the technical characteristics recommended to improve its efficience and reduce light pollution. Since it was

An international team of astrophysicists from the Instituto de Astrofísica de Canarias (IAC), the University of La Laguna (ULL) and the Space Telescope Science Institute (STScI, USA) has discovered the presence of transverse rotation (in the plane of the sky) in three dwarf spheroidal galaxies, a very faint type of galaxies and difficult to observe, which are orbiting round the Milky Way; this helps to trace their evolutionary history. The finding was made using the most recent data from the GAIA satellite of the European Space Agency. The results of the study have just been published in the

The United Nations Office for Outer Space Affairs (UNOOSA), the Instituto de Astrofísica de Canarias (IAC), and the International Astronomical Union (IAU) will be organizing, in La Palma, the meeting “Dark and quiet skies for science and society” between the 3rd and 7th of October 2021. This meeting is the continuation of the online workshop with the same name, which brought together, a year ago, about a thousand researchers from throughout the world to campaign for the natural darkness of the night sky. The congress “Dark and Quiet Skies for Science and Society” is backed by UNOOSA, the