I know we've only just begun to explore Equestris, but I've been a fan of astronomy for forever. Am I the only on who wants to know what lies beyond whatever the planet the ponies, griffons, yaks, etc. Live on? Is there magic in space? Is it a different kind of magic than what's found in Equestria? All we really know is that Nyx live on the moon and taught NMM to dreamwalk, and that the Horsehead Nebula exists out in space, somewhere.
You speak of these things as if they were canonical facts. Are you looking for fanfic suggestions or what's the purpose of this thread?
I think he's just asking what pony outer space would be like. probably like ours I guess just with more horse puns.
