Cherenkov Telescope Array Observatory (CTAO) is the next-generation ground-based $\gamma$-ray observatory operating in the energy range from $20\, \mathrm{GeV}$ up to $300\, \mathrm{TeV}$, with two sites in La Palma (Spain) and Paranal (Chile). It will consist of telescopes of three sizes, covering different parts of the large energy range. We

V Sge is a peculiar, highly luminous long-period (12.34 h) binary star that can display a supersoft X-ray emitting component when in the faint phase of its $V \approx 10-13$ mag variability range. Apparently undergoing Eddington-limited accretion from its more massive secondary, it is in a very rare, short-lived evolutionary phase towards the

The "Neptunian ridge" is a recently identified peak in the frequency of planets with sizes between that of Neptune and Saturn orbiting their host stars with periods between 3 and 6 days. These planets may have formed similarly to their larger, hot Jupiter counterparts in the "3 day pileup," through a dynamically excited migration pathway. The

We investigated the origin and formation mechanisms of the intracluster light (ICL) in THE THREE HUNDRED simulations, a set of 324 hydrodynamically resimulated massive galaxy clusters. The ICL, a diffuse component comprised of stars not bound to any individual galaxy, serves as a critical tracer of cluster formation and evolution. Using two

Context. O-type stars are key drivers of galactic evolution. For the first time, modern spectroscopic surveys combined with Gaia distances are enabling reliable estimates of the fundamental parameters of several hundred Galactic O-type stars, spanning the full range of spectral types and luminosity classes. Aims. We aim to provide updated

Context. Cosmic voids are underdense regions within the large-scale structure of the Universe, spanning a wide range of physical scales ─ from a few megaparsecs to the largest observable structures. Their distinctive properties make them valuable cosmological probes and unique laboratories for galaxy formation studies. A key aspect to investigate