"Calibrating the absolute magnitude of type Ia supernovae in nearby galaxies using [O II] and implications for H0" - Dixon et al. (2025)

A rather brilliant paper from my student Mitchell Dixon focussed on exploding stars, known as supernovae, and finding ways to make them more accurate distance measurement tools to map the expansion of the universe itself. In the end he found that nearby ‘calibrator’ supernovae had a systematic shift with the specific star formation rate (i.e. how rapidly the galaxy is doubling its mass in stars) and taking that into account he improved the accuracy of the expansion rate of the universe known as the Hubble Rate (or H0 of the title).