Coming at a surprise: Milky Way companion galaxies are mostly newcomers
Dwarf galaxies in the vicinity of the Milky Way are believed to be its satellites, much like the Earth orbiting the Sun. The new Gaia data released at the end of 2020 reveals that they are new comers in the Galaxy surroundings, which is the conclusion of the international team from France, China, and Germany. Published online on November 24, 2021 in the Astrophysical Journal, the study calls into question many ideas about our Galaxy and its environment.
11 25, 2021