What is the largest sturctual unit of the universe?

Answer 1

The largest structures are superclusters. Superclusters are made of clusters of galaxies. Larger or not, the Brick Wall (whatever it's called) also is large.

As of January 2013, the Huge Large Quasar Group is the largest known structure in the universe. The Huge-LQG was discovered in January 2013.

Answer 2

The largest structural unit of the universe is the universe itself, which includes galaxies, galaxy clusters, and superclusters. These structures are organized into a cosmic web of filaments and voids that span billions of light-years across.

Answer 3

Astronomers have noted that galaxies are not evenly distributed, but occur in "clumps" and these clumps often belong to greater clumps, which in turn seem to be strung along some invisible lines. These they call "superstrings."

Answer 4

The largest that has been identified so far is the supercluster of galaxies, i.e. a cluster of clusters of galaxies.

Answer 5

The Sun.