its original black hole population should be almost entirely gone. This group provided dynamical simulations that showed that a concentration of white dwarfs could explain the first measurement. Finally, in 2022, a work was published by the former scientists, along with one of the leaders of the latter group, and other experts of Hubble and Gaia data. This new work showed that the fits of the central mass excess in NGC 6397 from observed data agreed remarkably well with numerical simulations accounting for a population of hundreds of massive white dwarfs, and essentially no black holes. Gallery See also List of brightest stars List of nearest bright stars Lists of stars Historical brightest stars References External links NGC 6397 in the Staracle NGC catalog SEDS – NGC 6397 Ara (constellation) Globular clusters 6397 086b