黄こう道どう光こう

noun

zodiacal light

Astronomical term for the faint, roughly triangular glow visible in the night sky, caused by sunlight scattered by interplanetary dust along the ecliptic.

• 黄こう道どう光こうは、春はるの夕ゆう方がたの西にし空ぞらや秋あきの明あけ方がたの東ひがし空ぞらで観かん測そくしやすい。

  Zodiacal light is easiest to observe in the western sky on spring evenings or in the eastern sky on autumn mornings.