Researchers calculated the ability of various solar system objects to gravitationally bend light from distant objects, which will be necessary to know before conducting high-precision astrometry.
Type Ia supernovae aren’t always the result of a white dwarf accreting material from a stellar companion, and the huge ejecta mass of a recent explosion suggests a merger of two white dwarfs instead.
Spectra of eight planetary nebulae — the beautiful, short-lived nebulae formed when low- and intermediate-mass stars evolve off the main sequence — yield new chemical abundance measurements.
A study of two of six potential landing sites for Artemis astronauts suggests that the two sites are traversible but contain large boulder fields, areas of exposed impact crater ejecta, and permanently shadowed regions.
Observations enabled a chance reveal of a young brown dwarf losing mass nearly spherically, which may be linked to the brief phase of deuterium fusion that these stellar objects are thought to experience.
Gamma-ray bursts in high density environments such as the disk of material around an accreting black hole are likely to be long lived, with a characteristic time evolution from high- to low-energy X-ray emission.