[HN Gopher] Galilean Moons and Determination of Longitude
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       Galilean Moons and Determination of Longitude
        
       Author : tosh
       Score  : 14 points
       Date   : 2024-09-24 20:48 UTC (2 hours ago)
        
 (HTM) web link (en.wikipedia.org)
 (TXT) w3m dump (en.wikipedia.org)
        
       | titanomachy wrote:
       | I had heard of this, but never understood how it works until now.
       | 
       | Intuitively it makes sense that if you have an accurate universal
       | clock, you can check your longitude by measuring at what time the
       | sun rises/sets (i.e if you fly east 3 time zones, the sun will
       | set 3 hours earlier).
       | 
       | It turns out that Jupiter's moons can be used as an accurate
       | universal clock, by noting the timing of various eclipses.
        
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       (page generated 2024-09-24 23:01 UTC)