The study of young and fast astronomical transients is often limited by the difficulty of acquiring data, particularly spectra, within hours to days of explosion. Historically, follow-up programmes have rarely obtained spectra until many days after discovery; coupled with lower-cadence discovery observations, this has meant that the early evolution

Aims. We aim to constrain the dynamical masses of the four confirmed transiting planets orbiting the infant (20 ± 10 Myr) star V1298 Tau (orbital periods P b~ 24.1 d, P c~ 8.2 d, P d~ 12.4 d, and P e~ 48.7 d), through a new analysis of a homogeneous radial-velocity dataset. This system is a key benchmark for testing formation and early-stage

We investigate the physical origin of the bimodality in bulge-dominated galaxies, originally identified by Sampaio et al. (2025), by combining non-parametric morphological metrics, structural scaling relations, stellar kinematics, and environmental trends across a wide redshift range ( $0.2 \lt z \lt 2.4$). Using the MEGG-based hybrid

Context. Accurate modeling of stellar spectra is essential for deriving the physical properties of stars. However, traditional model atmospheres often oversimplify key phenomena -- such as deformations due to rotation or multiplicity -- that break spherical symmetry. The Spectroscopic PAtch Model for Massive Stars (SPAMMS) addresses these

Context. Originating from massive stars that have lost most of their hydrogen envelopes, type IIb supernovae are stellar explosions of partially stripped stars. Due to this extensive stripping, their spectra exhibit transitional signatures that bridge the gap between hydrogen-rich (type II) and helium-rich (type Ib) events, making them crucial

Near-Earth Objects (NEOs) can pose a significant threat to Earth, with the potential to cause material damage or human casualties. As a result, planetary defense has become increasingly important, and early characterization of these objects is essential for developing possible mitigation strategies. Within this context, the NEOROCKS project (funded