The Digital Press

New measurements of strongly lensed quasars combined with improved stellar kinematics yield a precise estimate of the Hubble constant, supporting a higher value consistent across multiple cosmological models.

Why it matters: This refined $H_0$ measurement helps address tensions in cosmology between different methods of determining the universe’s expansion rate.

The big picture: Combining time-delay lenses with galaxy samples and supernova data improves precision on $H_0$ to 4.4% within flat $\Lambda$CDM cosmology.

Stunning stat: The Hubble constant is measured as $72.1^{+4.0}_{-3.7}$ km/s/Mpc, favoring a higher expansion rate than some other probes.

Quick takeaway: Results are robust across flat, open, and dark energy cosmologies and agree well with BAO and supernova constraints.