Spectra of 3I/ATLAS as it retreated from its encounter with the Sun show that the comet’s mixing ratios of CN, C₃, and C₂ with respect to water are similar to those of solar system comets, while NH₂ is depleted.

An analysis of synthetic starspot-crossing events suggests that while starspot longitudes are tightly constrained in high signal-to-noise data, other properties are more loosely determined.

Using data from JWST, the Subaru Telescope, and the Atacama Large Millimeter/submillimeter Array, researchers have identified a previously unseen collimated protostellar jet in a Herbig–Haro object.

Researchers have discovered two chemically distinct populations in a sample of 97 metal-poor stars in the Milky Way halo, potentially providing a way to identify accreted halo stars.

Analysis of blue straggler stars in 56 Milky Way globular clusters finds no evidence for a bimodal distribution in color–magnitude space due to differing formation pathways.

By constructing a detailed distance map to the Magellanic Clouds, researchers have revealed substructures within this interacting galaxy pair, including an azimuthal warp in the Large Magellanic Cloud.