Scientists have long known that the Milky Way is what it is today because of mergers with other galaxies, but exactly when those occurred has been less clear.
Scientists have long known that the Milky Way is what it is today because of mergers with other galaxies, but exactly when those occurred has been less clear.
Distant, far away galaxies. Interacting galaxies, whose shape has been forged by the mutual gravitational influence, but also..