After a week of intense work, with the participation of almost a thousand researchers from all over the world, the online workshop “Dark and quiet skies for science and society” has finished. For five days work has proceded on the preparation of a document which can offer governments, city councils, and companies the legal and technical basis for avoiding the possible negative impact of the newest technology on the observation of the night sky, and on biodiversity.

A team of researchers from the Instituto de Astrofísica de Canarias (IAC) has detected for the first time the constant infrared emission from winds produced during the eruption of a black hole in an X-ray binary. Until now, these flows of material had been detected only in other wavelength ranges, such as X-rays or the visible, depending on the phase in which the black hole is consuming its surrounding material. This study provides the first evidence that the winds are present throughout the evolution of the eruption, independently of the phase, and this is a step forward in our