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.

Analysis of 11 stars suggests that starspot coverage decreases with age, potentially creating the opportunity to incorporate starspot coverage into isochrone models to improve stellar age estimates.

Twelve of the 49 prime-mission flybys of Europa Clipper are “reconable,” meaning they at least partially meet the requirements for collecting terrain data critical for future spacecraft landing.

The twin-bubble system of N65 and N65b exhibits tell-tale signs of cloud–cloud collision: a bridge, a U-shaped cavity, and a complementary distribution with displacement.