An article published in the journal “Astronomy & Astrophysics” describes a research on a group of red giant stars located in the halo surrounding the Milky Way. A team of astronomers led by Giuseppina Battaglia of the Istituto de Astrofísica de Canarias examined the composition of a 28-star sample discovering that the presence of some chemical elements is quite different from the halo’s innermost regions. The conclusion is that they were not born in our galaxy but in ancient dwarf galaxies that were absorbed by the Milky Way.