Steven L. Finkelstein et al 2024 ApJL 969 L2
Eighty-eight candidate high-redshift galaxies — 13 of which have now been spectroscopically confirmed — show that the number density of these UV-bright galaxies didn’t change much from z ~ 14 to z ~ 9.
Transient surveys are discovering increasingly complex supernovae; one such example transitioned from being Type IIb–like to resembling a stripped-envelope supernova during a dramatic second peak.
Tyrone N. O’Doherty et al 2024 AJ 168 44
New research suggests that astronomers should proceed carefully with identifying black holes via ellipsoidal variations; a closer look at a black hole candidate revealed a likely contact binary instead.
The existence of Martian “tadpole craters” with rims broken by outflowing liquid but no inflowing liquid may imply the past presence of hundreds of meters of surface ice, modeling suggests.
A survey has discovered 34 giant radio sources — active galactic nuclei with projected linear sizes larger than about 2.2 million light-years — and reported on their multi-wavelength properties.
Active galactic nucleus hosts that have outflows tend to have higher star formation rates, later morphological types, and no evidence of quenching of star formation, among other characteristics.