艾欧卫星凌日

加入我们的科学爱好者社区!

图片来源:JPL/NASA

在有史以来首次拍摄的木星卫星艾欧凌日的影片中,火山喷发和极光放射在巨行星(右侧)的阴影中发光。美国国家航空航天局的卡西尼号宇宙飞船在新年的第一天捕捉到了构成该序列的图像。

来自艾欧卫星著名火山的熔岩流在新影片中呈现为明亮的光点。其中最耀眼的佩莱火山,尽管强度很大,但似乎仍在稳定喷发。相比之下,皮兰火山(以佩莱火山上方和右侧的两个点表示)自1997年壮观的喷发以来,在过去的30个月中已经消退。在皮兰热点下方,存在着一个特征截然不同的火山,它在几天的时间尺度上逐渐增强和减弱。


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,您正在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有影响力的故事。


类似于地球的北极光和南极光的大气极光解释了环绕艾欧卫星的短暂光芒。更明亮的光芒出现在卫星赤道附近,随着凌日的进行而顺时针移动——这是木星磁场方向变化的结果。事实上,新的观测结果提供了证据,表明这些极光是由于在艾欧卫星和木星之间沿磁场线流动的电流造成的。

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.