Empress' Space Center

Skarans use Greek terms for the noun (basilieus/á) and adjectival (basilis/e) forms of "sovereign/ruler." After a bit of research, I found (i) castra/um (camp) to be the closest Latin word for my purposes and (ii) diastimikó kéntró Básilis to be the Greek translation of Empress' Space Center. What are some options for "space center" in Latin?