A newly identified string of galaxies, stretched across tens of millions of light years and slowly turning in space, is forcing astronomers to rethink how structure and motion emerge on the grandest ...

A giant rotating filament of the cosmic web may be the largest spinning structure ever seen, and could help reveal how galaxies form.

A strange cosmic object described by string theory could be mistaken for an ordinary black hole from far away. If these objects do exist, they could solve a long-standing paradox about black holes.