这些奇特环状结构起源的诸多臆测，包括由致密遗骸的高能喷流束及两个重叠的恒星风受到超新星爆炸的游离。

• Speculation into the cause of the rings includes beamed jets emanating from a dense star left over from the supernova, and a superposition of two stellar winds ionized by the supernova explosion.