Everything turns in space

This discovery could lead to new insights into the origin of the rotational movements. “Where the angular momentum comes from in the cosmic framework is one of the unsolved riddles of cosmology,” explains Pen Wang’s team from the Leibniz Institute for Astrophysics in Potsdam. In today’s standard model, all cosmic structures arise from the slow compression of originally evenly distributed matter. In the initial state after the Big Bang, however, there were no rotational movements – so where do the observed rotations come from?

With their observations, Wang and his colleagues have come a little closer to an answer to this question. Galaxies are not evenly distributed in the cosmos. They form large piles, which in turn are connected by elongated, thin structures. In these filaments, galaxies slowly flow towards the large galaxy clusters, which sit like knots in a network of filaments.