Although, on an extragalactic scale, galaxies are effectively reduced to particles, they do not show a random distribution in space. Far from it, they are arrayed into large-scale structures that exhibit a remarkable texture. Filamentary structures seem ubiquitous, as do bubble-like voids. One method by which the structures can be quantified is by minimal spanning trees. Recent work at UCT suggests that all galaxies belong to one or another larger structures, and that all large-scale structures interconnect with one another in a cosmic labyrinth.
Labyrinth is also the name of a visualisation program developed by Carl Hultquist and Samesham Perumal at UCT. Its main strength is its ability to depict large-scale structures based on minimal spanning trees. Examples of its application to the 6dF database will be shown.
Note: This presentation is particularly intended for NASSP Honours students.