Short-period white-dwarf--main-sequence (WDMS) binaries provide direct constraints on the outcomes of common-envelope (CE) evolution and the survival of low-mass companions during engulfment. We report the discovery and confirmation of 10 totally eclipsing WD + cool-M-dwarf binaries identified through a search tailored to minute-scale eclipses in

Using the first spectroscopic data release from the Dark Energy Spectroscopic Instrument (DESI DR1), we conduct the largest systematic search for active galactic nuclei (AGN) signatures in ≈1.7 million low-redshift (0.001 <= z <= 0.45) line-emitting galaxies. Based on the [N II]/Hα versus [O III]/Hβ emission-line ratio diagnostic, we identify AGN

Context. Persistent jets from X-ray binaries that are aligned very close to the line of sight could be considered Galactic equivalents of blazars, or `microblazars'. They are also expected to power gamma-ray sources. Aims. We intend to assess a serious candidate apparently fulfilling many of the requirements to be considered a genuine member of

Context. Space-based photometry has enabled major advances in asteroseismology, particularly for intermediate-mass A-F type stars located at the intersection of the main sequence and the classical instability strip. These stars, including δ Scuti, γ Dor, and roAp variables, exhibit a wide range of pulsation regimes and excitation mechanisms, but

The angle between stellar spin axis and planetary orbital plane can provide key insights into the formation and dynamical evolution of planetary systems. In particular, this measurement in multi-planet systems can be used to further discriminate between different competing migration scenarios. We present six transit observations of the sub-Neptune

The Near-Infrared Spectrometer (NIRS3) onboard Hayabusa2 observed asteroid (162173) Ryugu, searching especially for signatures of water-bearing minerals. However, during the mission, absolute reflectance measured by the Telescopic Optical Navigation Camera (ONC-T) and NIRS3 showed a systematic offset. Additionally, touchdown operations have