干ひ潟がた星せい雲うんMeanings1nounLagoon Nebulaastronomy›Proper noun referring to the Lagoon Nebula (M8), a large emission nebula in the constellation Sagittarius.干ひ潟がた星せい雲うんはいて座ざにある散さん光こう星せい雲うんです。The Lagoon Nebula is a diffuse nebula in the constellation Sagittarius.