Deep Impact: Excavating Comet Tempel 1
Deep Impact: Excavating Comet Tempel 1
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DOI：
10.1017/s1743921307010861
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发表时间：
2005-10
期刊：
影响因子：
56.9
通讯作者：
M. A’Hearn;M. Belton;W. Delamere;J. Kissel;K. Klaasen;Lucy A. McFadden;K. Meech;H. Melosh;
中科院分区：
文献类型：
--
作者：
M. A’Hearn;M. Belton;W. Delamere;J. Kissel;K. Klaasen;Lucy A. McFadden;K. Meech;H. Melosh;
Deep Impact 与坦普尔 1 号彗星相撞，挖出了一个由重力控制的陨石坑。彗星的外层由 1 至 100 微米的细颗粒组成，强度可忽略不计（1000 开尔文）。事件期间和之后有机物质大量增加，二氧化碳相对于水的变化较小。在接近过程中，航天器观察到频繁的自然爆发，平均半径为 3.0 ± 0.1 公里，平坦和崎岖的地形，陡坡和撞击坑。热图表示与阳光处于平衡状态的表面。
Deep Impact collided with comet Tempel 1, excavating a crater controlled by gravity. The comet's outer layer is composed of 1- to 100-micrometer fine particles with negligible strength (1000 kelvins). A large increase in organic material occurred during and after the event, with smaller changes in carbon dioxide relative to water. On approach, the spacecraft observed frequent natural outbursts, a mean radius of 3.0 ± 0.1 kilometers, smooth and rough terrain, scarps, and impact craters. A thermal map indicates a surface in equilibrium with sunlight.