Everyone!!! I found it! After months of plotting artifact locations and translating those partial glyphs, I've triangulated what I'm 99% sure are the coordinates of a Zotaxian vessel! The pattern was a spiral like Jonesey predicted, but with a temporal axis twist I didn't account for initially.
The only problem is... it's REALLY far into the future. Like, way beyond our current engine capacity. The Flying Time Vessel would need major upgrades to reach it. But this is it - I'm sure of it! All the artifacts we've been finding are pieces that scattered backward through time when the ship crashed!