Three of these four objects have possible, but unproved, associations with young supernova remnants.
这四颗星体中的三颗，可能都和年轻超新星的残骸在一起，但这一点还尚待确定。
Also called 30 Doradus, the red and pink gas indicates a massive emission nebula, although supernova remnants and dark nebula also exist there.
也被称为剑鱼座30，红色和粉色气体标示一个大质量发射星云，尽管这儿也存在着超新星遗迹和暗星云。
Supernova remnants: What is left after a heavy star violently explodes.
超新星遗迹：超重星体爆炸后所剩下的残迹。
Supernova remnants play an important role in stellar evolution by enriching space with heavy elements, and triggering new star formation by compressing interstellar gas.
超新星残骸以重元素填充宇宙空间，压缩星际气体促进新恒星的形成，因而在星体演化过程中扮演重要角色。
Supernova remnants play an important role in stellar evolution by enriching space with heavy elements, and triggering new star formation by compressing interstellar gas.
超新星残骸以重元素填充宇宙空间，压缩星际气体促进新恒星的形成，因而在星体演化过程中扮演重要角色。
应用推荐