Fraser Cain on Nostr: Since ancient times, navigators have used astrolabes to find their way across Earth. ...
Since ancient times, navigators have used astrolabes to find their way across Earth. Rotating metal disks reference different stars in the sky, allowing a navigator to calculate their latitude. The Dominican preacher friars owned one notable astrolabe, which is currently in a museum in France. Astronomers have measured the positions of the stars on the astrolabe, compared it to their current positions in the sky, and calculated that it was made in 1550.
http://arxiv.org/abs/2311.17966 
Published at
2023-12-01 20:34:03Event JSON
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"content": "Since ancient times, navigators have used astrolabes to find their way across Earth. Rotating metal disks reference different stars in the sky, allowing a navigator to calculate their latitude. The Dominican preacher friars owned one notable astrolabe, which is currently in a museum in France. Astronomers have measured the positions of the stars on the astrolabe, compared it to their current positions in the sky, and calculated that it was made in 1550.\n\nhttp://arxiv.org/abs/2311.17966\n\nhttps://m.universetoday.com/system/media_attachments/files/111/507/068/888/637/395/original/f5d041aaad3d7ad4.jpg",
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