Much better is NASA’s announcement at https://www.nasa.gov/feature/goddard/2022/hubble-determines-mass-of-isolated-black-hole-roaming-our-milky-way-galaxy http

Much better is NASA’s announcement at https://www.nasa.gov/feature/goddard/2022/hubble-determines-mass-of-isolated-black-hole-roaming-our-milky-way-galaxy https://www.nasa.gov/feature/goddard/2022/hubble-determines-...