Astronomers used an extreme adaptive optics instrument to discern the presence of tiny white-dwarf companions next to main-sequence stars; a survey of 18 stars yielded seven candidates, five of which are confirmed.

A new age estimate for a blue supergiant suggests that the star could be the product of a merger 5–21 million years after its cluster’s formation, involving stars with masses of 8.5–12 and 1.1–10.8 solar masses.

JWST observations show substantial azimuthal variations of both the inner and outer rings of the trans-Neptunian object Quaoar, and modeling shows that resonances with Weywot play a role in the stability of the rings.

The multi-object ultraviolet spectrograph FIREBall-2, designed to detect emission from the low-redshift circumgalactic and circumquasar medium, is the second iteration of a balloon-borne instrument.

Observations from Solar Orbiter show for the first time plasma motions within the void of a coronal mass ejection, demonstrating the conversion of magnetic writhe into twist.

Recurrent novae are predicted to be surrounded by vast superremnants, but few are known; this article brings the number of known superremnants to four and helps illuminate why so few have been discovered.