哈勃望远镜捕捉到正在形成的行星状星云中的超音速冲击波前沿

加入我们的科学爱好者社区!

图片来源:ESA 和 VALENTIN BUJARRABAL/国家天文台

天文学家使用美国宇航局的哈勃太空望远镜首次清晰地观察到行星状星云形成过程中产生的冲击波。这张新图像证实了理论预测的复杂气体结构,并可能预示着我们太阳的死亡将如何展开。

西班牙和美国研究人员对葫芦星云(也因其含有大量硫化合物而被戏称为臭鸡蛋星云)进行了观测,研究了垂死恒星喷射出的气体如何与周围物质相互作用。他们发现,正如计算机计算所预测的那样,高速碰撞导致冲击波阵面的形成,从而加热周围的气体。在右图的图像中,从恒星喷射出的气体显示为黄色,加热的气体显示为蓝色。垂死的恒星本身被笼罩在两条流动气体流之间的尘埃带中。


关于支持科学新闻报道

如果您喜欢这篇文章,请考虑通过以下方式支持我们屡获殊荣的新闻报道: 订阅。通过购买订阅,您将帮助确保未来能够继续讲述关于塑造我们当今世界的发现和想法的具有影响力的故事。


团队成员瓦伦丁·布哈拉巴尔指出:“我们可以看到冲击波是如何突破周围气体的。” “我们相信我们可以看到我们期望的两种冲击波成分——前向和后向冲击波。” 哈勃图像中显示的大部分气体流似乎来自大约800年前发生的突然加速。研究小组推测,再过1000年,这个原行星状星云将完全形成。

Kate Wong is an award-winning science writer and senior editor at 大众科学 focused on evolution, ecology, anthropology, archaeology, paleontology and animal behavior. She is fascinated by human origins, which she has covered for more than 25 years. Recently she has become obsessed with birds. Her reporting has taken her to caves in France and Croatia that Neandertals once called home, to the shores of Kenya's Lake Turkana in search of the oldest stone tools in the world, to Madagascar on an expedition to unearth ancient mammals and dinosaurs, to the icy waters of Antarctica, where humpback whales feast on krill, and on a "Big Day" race around the state of Connecticut to find as many bird species as possible in 24 hours. Kate is co-author, with Donald Johanson, of Lucy's Legacy: The Quest for Human Origins. She holds a bachelor of science degree in biological anthropology and zoology from the University of Michigan. Follow Wong on X (formerly Twitter) @katewong

More by Kate Wong
© . All rights reserved.