After watching the movie interstellar (which I highly recommend), I stumbled across this article. It talks about a recent finding that the cores of several distant galaxies align with one another. These galaxies are spread apart by about 1 billion light years. The astrophysicist, Damien Hutsemékers used large telescopes to calculate the orientations of 19 quasars (galaxies with very active black holes at their centers). The new findings could help us understand the mechanisms that shape the largest structures in the universe. Maybe it could also help us travel to other galaxies like director Chris Nolan envisioned in his movie.
The paper is titled “Alignment of quasar polarizations with large-scale structures” and it was just published 2 days ago in the journal Astronomy & Astrophysics.