It should also help to determine whether most of the dust in the supernova remnant came from the massive star before it exploded, or from the rapidly expanding supernova ejecta.

• 这还可以帮助人们确定，超新星遗迹中的大部分尘埃究竟源于爆发前的大质量恒星，还是来自迅速膨胀的超新星抛出物。