02 November 2018
Scientists unravel the formation history of the Milky Way
... Way, these stars, although completely interspersed in the inner halo, all moved along elongated trajectories in the opposite direction. ...therefore help ascertain that as well as supplying the halo stars, the collision between Gaia–Enceladus and the ...
17 July 2019
New measurement deepens mystery of Universe’s expansion rate
...'s exquisite sharpness and sensitivity allowed for red giants to be found in the stellar halos of the host galaxies. The red giants were searched for in the halos of the galaxies. The center row shows Hubble's full field of view...
