Andromedagalaxis is a cosmic runaway

Inexplicable asymmetry: Our neighbor galaxy Andromeda puzzles astronomers, because their dwarf galaxies are extremely one-sidedly distributed. Almost 80 percent of them are on the same side of the Andromeda. The strange thing about this is that less than 0.3 percent of all similar galaxies show such asymmetry. And even in simulations, the astronomers could not reproduce this one-sidedness, as they report in Nature Astronomy. Thus, Andromeda gala…