• Xavienth@lemmygrad.ml
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    1 year ago

    But wait, the sun moves around in its orbit around the galaxy. How can the sun be straddling the line at all times? You can’t even solve that by saying the division is exactly in the same plane as the sun’s orbit because it varies up and down due to differences in the galactic make-up. Does the dividing line just move with the sun like some sort of sol-centric division?

    • Cethin@lemmy.zip
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      1 year ago

      There’s no way to define a direction of a galaxy really, so you’d have to choose some arbitrary direction as “north” or whatever you call it. I assume that’s what they’ve done. They define the direction to Sol as the line upon which everything else is measured.