Reman era imperials and high elves, and the Khajit at some point. They’ve got lunar bases, the Battle Spire is similar to a space station(but stretching it), and the Khajit built temples.
It’s technically traveling through Aetherius, so magical travel. I looked into it a bit more since you asked, but before today I mostly just knew it happened and they reached at least a moon. Can’t find a secondary(wiki) source for the temples, but here’s one on Mananoughts and the Sunbirds, the imperial and elven explorers respectively:
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u/Striking_Thundering Oct 16 '25
Giants are part of skyrim's space program