圖片來源: NAOJ; Masaaki Otsuka
The location of the Sun is given by a green circle, and the dotted line shows the Solar Circle, e.g. the circle that connects all points with the same distance to the Galactic Centre as the Sun. The dashed lines indicate the approximate location of the spiral arms in the Milky Way (Picture Credit: NAOJ; Masaaki Otsuka)
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