An analysis of X-ray data from the Chandra X-ray Observatory suggests that “little red dot” galaxies do harbor active galactic nuclei, though the properties of these objects differ from other active galactic nuclei.

Briny water formed during the impact of an icy body on an airless moon should remain liquid long enough to form curved gullies, but pure water likely freezes too quickly to do so.

Researchers use high-resolution observations from the Hinode satellite to constrain simulations of the solar meridional flow for the first time, reproducing the observed properties of the polar magnetic field.

Meet S/2023 U1, S/2021 N1, and S/2002 N5: these newly discovered moons of Uranus and Neptune are just 7, 14, and 23 kilometers across, respectively.

Collisions between stars can produce transient signals similar in brightness to supernovae; new analytic and hydrodynamic modeling examines the properties of these events.

Measurements of galactic half-light radii at different wavelengths, combined with an investigation of simulated galaxies, suggest that dust rather than inside-out growth is responsible for observed trends.