What do the surveys of the three-dimensional distribution of groups of galaxies reveal???

Question

What do the surveys of the three-dimensional distribution of groups of galaxies reveal about how groups and clusters of galaxies are organized?

Galaxy groups are distributed completely evenly -- there is typically the same amount of space between them -- and so there is no structure evident.

Galaxy groups make a huge spiral structure that resembles the Milky Way (but is much bigger).

Galaxy groups are organized into huge spherical "lumps" with concentric rings of groups of galaxies around each lump.

Galaxy groups are organized into huge filaments with great voids
between them -- something like the structure one would see taking a cross-section of some soap bubbles.

astronomers cannot get any sense with our present-day instruments of how groups of galaxies are distributed on the large scale.

Answer 1

"Galaxy groups are organized into huge filaments with great voids between them -- something like the structure one would see taking a cross-section of some soap bubbles."

"Brans" in the answer above should be "branes", but that's not what the structures are called - brane theory might explain the large scale structure, though.

Answer 2

as others have mentioned the deep space survey has shown there are filaments. sheets clumps and vacuules spread all throughout the universe. it looks from a distance like foam. look under Sloan Digital Sky Survey (SDSS) for some neat pics or download celestia and the sloan data files and play with the universe :)

Answer 3

Ask the One who created them !

Answer 4

nothing, because there are more than 3 dimenstions