The stream follows the orbits of the Large and Small Magellanic Clouds, two small companion galaxies that revolve around the Milky Way like moons around a planet.

• 该气流是一道顺著大小麦哲伦云的轨道，绕行银河系的弧形气体（大小麦哲伦云是银河系的小型伴星系）。