We review some ideas and facts and disputes related to the research about the stellar density distribution in the Galactic bulge in the last decades: the discovery of the bulge triaxiality, boxiness, the long-bar as an extra component or as an extension of the own bulge (1st dispute), or the proposal of its X-shape form that has been criticized as

La próxima generación de telescopios solares requerirá sistemas de óptica adaptativa multiconjugada (MCAO) para conseguir la máxima resolución espacial en imágenes de campo extenso de aproximadamente 1 minuto de arco. Estos sistemas son especialmente ambiciosos y presentan múltiples retos tecnológicos. Por ello, dentro del EST se está desarrollando

Traditional Searches for Extraterrestrial Intelligence (SETI) use large radio telescopes to look for artificial signals from specific stars. In the era of large astronomical surveys, it is now possible to efficiently search for objects having certain predicted signatures of astro-engineering. In this talk, I present an international, cross

Increasing light pollution is a threat to the research capacity of astronomical observatories. The case of the Teide observatory is not an exception, despite the OPTC's sustained protection efforts. We now have powerful modeling tools to theoretically test the impact of a change of lighting devices on the quality of the starry sky. During this

Our view of the gas and its physical conditions in the central region of AGN has been enriched by the discover of fast and massive outflows of HI and molecular gas. These outflows can be driven by radiation/winds but also by the interaction of the radio plasma with the ISM. Understanding the origin and quantifying their impact requires to trace