Change it to Nioavellir and it will...
as for renaming the system...Just past the new names over the old names on a starmap. In fact ill work on one and post it...
And its supposed to be confusing...Youd be playing as an Alien from 8000 years ago....Of course they'll have different names for things (Think Breen/Sweedish meatballs from babylon 5 or Gin&Tonic from tHHGttG)
And just so you know, I final all ancient mythology facinating
Norse
Native American
Greek/Roman
Ancient Egyptian
Japanese
The war of heaven between God and Lucifer
As for naming ships, sure there are some dabbles in to Norse mythology (Mjolnir, Loki, Jotunheim, Valkyrie + a few others i think), the primary nomenclature for Terrans seems to greek/roman mythology.
Norse mythology hasn't been used as a primary nomenclature yet
I was thinking that while Terrans apply Minoan names to the Ancients, id have have the ancients actually use something like Norse or Babylonian/Sumarian names while the shivans use Aztec or Inca names for thenselves