Such a beautiful masterpiece
Makes you wonder what they have now... classified and hidden away.
The SR-71 Blackbird Astro-Nav System (aka R2-D2) worked by tracking the stars and was so powerful that it could see the stars even in daylight https://theaviationgeekclub.com/the-sr-71-blackbird-astro-nav-system-aka-r2-d2-worked-by-tracking-the-stars-and-was-so-powerful-that-it-could-see-the-stars-even-in-daylight/amp/
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