At a distance of 4.4 au from the Sun, interstellar object 3I/ATLAS showed no signs of emission from typical cometary species, in agreement with models that predict activity to start at smaller heliocentric distances.

Detailed spectroscopy has revealed a bow-shaped feature in the radial-velocity structure of the Rosette Nebula, suggesting a possible interaction between the Rosette and a nearby supernova remnant.

A new two-dimensional hydrodynamics code, SPLASH, has been developed to model the early stages of constant-rate accretion onto a spherical neutron star, during which a convective instability is triggered.

The presence of hydrated salts in the rocky surface material on a body like Ceres is thought to slow the retreat of the ice table; Ceres’s average equatorial temperatures show delays of a few to tens of millions of years.

The neural network model ParkerNet demonstrated strong performance in identifying and characterizing switchbacks even with only 12% of data labeled as such, providing a way to detect future switchbacks.

Repeating and non-repeating fast radio bursts appear to originate from different progenitors, environments, or emission mechanisms — but intriguingly, both appear to be consistent with a magnetar origin.