3D method can accurately measure gravity in wide binary stars, as demonstrated by pilot study

Since the third Gaia data release in 2022, wide binary stars with separation greater than several thousand astronomical units have been intensely investigated across the world, to probe the nature of ...
The University of Chicago Chronicle

Aging stars provide a new cosmological yardstick

Despite a century of measurements, astronomers can’t agree on the rate at which the universe is expanding. A technique that relies on measuring distances to a specific type of aging star in other ...