Patina International Restaurant Group posted restaurant name and some info to recruit staff here:
https://en.internationalservices.fr/international-program-epcot-space-220-restaurant-c133.html
Reported by Disney Food Blog and Waltineers
Suggested they are going for an international space station theme so a cast of international waitstaff. Would mesh perfectly with Epcot's tech, future and multicultural themes.
One could speculate that the menu may reflect a variety of international dishes to tie in with an international space station. No concrete source though for that guess. Must be a hook other than dry astronaut ice cream.