Jonathan R. Gair et al 2023 AJ 166 22

Even when the electromagnetic counterpart of a gravitational-wave signal can’t be identified, researchers have shown that a statistical approach can allow for an estimate of the Hubble constant.

Jounghun Lee and Jun-Sung Moon 2023 ApJL 951 L26

Observations show for the first time that the spins of galaxies adjacent to cosmic voids — large regions containing almost no galaxies — switch from perpendicular to parallel at a certain mass.

Tyler Gorda et al 2023 ApJ 950 107

Researchers have used quantum chromodynamics (QCD) to advance our understanding of the equation of state — the relationship between density, temperature, and pressure — of a neutron star’s interior.

Alex J. Meyer et al 2023 Planet. Sci. J. 4 141

The Double Asteroid Redirection Test (DART) mission was a success, and researchers are now assessing its impact; a follow-up mission in 2027 will give us a closer look at the aftermath.

Andrew W. Boyle and Luke G. Bouma 2023 AJ 166 14

Stellar rotation rates are unreliable indicators of stellar age for stars more massive than 0.8 solar mass until they are about 86 million years old, suggests a recent study.

Guoqing Zhen et al 2023 ApJ 950 110

Using models to investigate X-ray bursts from accreting neutron stars, researchers find that different models yield significantly different burst durations and rise times.