Furthermore, and maintaining the analogy with the cosmology megaverse, a "chemical megaverse" is the collection of chemical multiverses; this would be given by the several different sets of descriptors that can be used to define a chemical space (Figure ). As previous papers have discussed (Table ), different chemical space representations lead to alternative spaces, and relationships between chemical compounds could be maintained or not. Each chemical space (in the middle section) could be subject to different 2D/3D visual representations of the chemical space.