First detection of helium emissions in RR Lyrae

First Detection of Molecular Gas in the Giant Low Surface Brightness Galaxy Malin 1

First detection of oscillations in the Halo giant HD 122563: Validation of seismic scaling relations and new parameters

First Detection of Sign-reversed Linear Polarization from the Forbidden [O I] 630.03 nm Line

First detection of the outer edge of an AGN accretion disc: very fast multiband optical variability of NGC 4395 with GTC/HiPERCAM and LT/IO:O

First detection of two superoutbursts during the rebrightening phase of a WZ Sge-type dwarf nova: TCP J21040470+4631129

First detection of VHE gamma-ray emission from TXS 1515-273, study of its X-ray variability and spectral energy distribution

First detections of the cataclysmic variable AE Aquarii in the near to far infrared with ISO and IRAS: Investigating the various possible thermal and non-thermal contributions

First determination of the dynamical mass of a binary L dwarf