Astronomers have identified what could be the largest structure ever observed in the known universe—a vast network of galaxy clusters and superclusters containing an astonishing 200 quadrillion solar ...

Astronomers have identified an unprecedented cosmic titan—a vast superstructure of galaxies stretching 1.3 billion light-years across, making it the single largest known structure in the universe.

The biggest objects in the universe are clusters of galaxies, such as the supercluster we live in right now - and including Abell 370, which was captured in a sprawling glittery space-scape by the ...