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> they could've used celestial navigation systems/star trackers Well, that implies they have the expertise to do so. Using a GPS is orders of magnitude easier.
by InclinedPlane 12y ago
> they could've used celestial navigation systems/star trackers
Well, that implies they have the expertise to do so. Using a GPS is orders of magnitude easier.
- toomuchtodo 12y agoStar trackers are available off the shelf, and aren't export restricted. They're essentially precision CCDs with on-board logic. Disclaimer: I am a geo/navi/celestial positioning nerd.