>>43892761Space and Time have been a dichotomy since Einstein's Space Time theory (if not earlier, but that's more or less the basis for Sinnoh's concept); especially considered the theory explains how they both effect how we process reality, which is entire theme of the Shinnoh games.
It also goes into why they chose the theme of Antimatter for Giratina and the concept of creation with Arceus, it's about the fundamental bases that make up our understanding of how reality works.
That's the problem with most of Pearl's supposed names; it's not talking about literal outer space, but the concept of space in it's entirety (Similar to XYZ coordinations, but in a more general and expanded sense.) So something like Celestial doesn't really work.
Temporal and Spacial both work as the dichotomy you're after, and share a cohesive naming scheme ending each adjective with 'al'
