Of course, the nebula is itself a star-forming region, but the stars that appear and disappear here include background and foreground stars that by chance lie along the same line of sight.

• 当然，该星云本身也是一个恒星形成区域，但是在这里产生及消失的恒星包括了偶然间位于相同视线上的背景和前景恒星。