JWST confirms what was only hinted at by previous infrared telescopes: icy pebbles do migrate inward in compact disks more readily than they do in larger disks with deep gas gaps.
A search for transit depth variability among 330 previously discovered exoplanets turns up four promising candidates; of those four, only one has variability likely due to the planet or its host star.
The Lucy spacecraft, which in October 2021 began its journey to visit eight asteroids, took pictures of the Moon while getting a gravity assist from Earth, providing a valuable test of its imaging system.
Jie Ju et al 2024 ApJS 270 11
Using selection criteria based on several spectral lines, researchers have constructed a new catalog of more than 5,000 blue horizontal-branch stars, which are old, low-mass, metal-poor stars.
Even among very metal-poor stars, LAMOST J1645+4357 is unusual, having unexpectedly much nitrogen and carbon, and unexpectedly little zinc, cobalt, and other elements.
Researchers find that the bright ring of light surrounding the supermassive black hole at the center of the galaxy Messier 87 is moderately polarized, suggesting the presence of orderly magnetic fields.