New data reveals a 3-million-light-year filament connecting two galaxies, each of which hosts a supermassive black hole.

An Einstein ring is light from a much more distant galaxy that bends in such a way as to perfectly encircle a closer object.

Teaming up with colleagues at the Max Planck Institute for Astrophysics ... "But because of the interplay between dark energy and dark matter, the large-scale structure of the universe today ...