The subsequent animations are segments from the main movie. X-ray sources do not come with labels. We have determined what these sources are and how far they are away. So in fact we know their three-dimensional distribution. We rotate the survey region so you can see the distribution of matter as a function of distance from the Earth.
Yellow spheres are groups and clusters of galaxies, while the small red spheres are active galaxies.
Notice the survey volume is a narrow cone like the beam of a lighthouse reaching out into space. The survey extends much farther out, but we focus on the nearby section here. The NEP Supercluster is the clump or over-density of clusters and active galaxies at 1.3 billion light years from Earth. We zoom in to have a closer look at the supercluster. This view is 500 million light years on a side.