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Detailed View of Charon, Moon of Pluto
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图注: Charon is the largest natural moon of the dwarf planet Pluto. This detailed image was taken by NASA’s New Horizons spacecraft in 2015 during its historic mission through the outer Solar System. Charon’s surface shows a fascinating mix of light and dark regions, including vast canyons, broad plains, and impact crater. With a diameter of about 1,200 kilometers, Charon is more than half the diameter of Pluto, making it unusually large compared to its parent body. Charon's mass is roughly 12% of that of Pluto.
Because Pluto and Charon are so close in mass, the center of mass of the system (the point both Pluto and Charon orbit) is not within Pluto but between Pluto and Charon. This is in contrast to systems like the Earth and its Moon where the center of mass lies within the larger body, the Earth in this case. Scientists think the Pluto-Charon system may have formed by a collision of two objects that then separated and began to orbit each other. By studying Charon and the smaller moons that circle Pluto, astronomers gain insight into how moons form and how distant icy bodies evolve over billions of years.
来源: NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute/Alex Parker
来源链接
词汇表:
卫星 , 冥王星
授权许可: 公共领域 公共领域 图标
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2.88 MB)
Children's Planetary Maps: Pluto & Charon astroEDU 教育活动(链接至 astroEDU 网站) Origin: astroEDU 描述: Learn about our furthest neighbors
词汇表:
天体生物学 , 行星科学 , 冥王星
标签:
Charon
, Maps
, Planetary cartography
, Spatial thinking
年龄段:
6-8
, 8-10
, 10-12
, 12-14
受教育等级:
初中
, Primary
, 中学
学习领域:
结构化探究式学习
费用:
低成本
时间跨度:
2 小时
组别大小:
小组
技能:
分析和解读数据
, 提出问题
, 传达信息
, 构建解释
, 开发和使用模型
, 从证据中进行论证
, 规划并开展调查
作者: Henrik Hargitai,Mátyás Gede
授权许可: 知识共享许可协议 署名 4.0 国际 (CC BY 4.0) 知识共享许可协议 署名 4.0 国际 (CC BY 4.0) 图标
谷神星
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图注: 这是一张由“黎明号”探测器在2015年5月在13641公里的距离拍摄的小行星谷神星的真彩色图像。右侧醒目的明亮陨石坑是豪拉尼(Haulani)陨石坑,其左侧较小的亮点位于奥克索(Oxo)陨石坑的底部。来自这些撞击的喷出物似乎暴露出明亮的物质,可能是水冰。
来源: NASA / JPL-Caltech / UCLA / MPS / DLR / IDA / Justin Cowart
词汇表:
小行星带 , 环形山 , 矮行星 , 撞击坑
分类:
太阳系
授权许可: 知识共享许可协议 Attribution 2.0 Generic 知识共享许可协议 Attribution 2.0 Generic 图标
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269.29 kB)
