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A comment on SR-71 Blackbird Astro-Nav System (a.k.a. R2-D2) worked by tracking the stars. Parent comment
As far as fuel goes (a) in a three-dimensional object, "volume adds up fast," and (b) aerial refueling.
(p.s. My dad was a US Navy pilot in the early 60s when celestial navigation was still core curricula.)
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As far as fuel goes (a) in a three-dimensional object, "volume adds up fast," and (b) aerial refueling.
(p.s. My dad was a US Navy pilot in the early 60s when celestial navigation was still core curricula.)