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【APOD美图共赏2011.07.19】展望灶神星

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发表于 2011-7-19 19:22 | 显示全部楼层 |阅读模式
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2011 July 19


Vesta Vista
Image Credit: NASA, JPL-Caltech, UCLA, MPS, DLR, IDA

Explanation: What does the surface of asteroid Vesta look like? The brightest asteroid in the Solar System and the object which takes up about 10 percent of the entire mass of the main asteroid belt had never been seen up close before. Over the past few weeks, however, the robotic Dawn spacecraft became the first spacecraft ever to approach Vesta. A few days ago, just after attaining orbit, Dawn took the above image. Early images show Vesta to be an old and battered world, covered with craters, bulges, grooves, and cliffs. Studying Vesta may give clues to the formative years of our early Solar System, as the unusual world may be one of the largest remaining protoplanets. After a year of studying Vesta, Dawn is scheduled to leave orbit and, in 2015, approach the only asteroid-belt object that is larger: Ceres.

 楼主| 发表于 2011-7-19 19:23 | 显示全部楼层
小月微博140字翻译:
【APOD美图共赏2011.07.19】灶神星的表面是怎样的?这颗太阳系最明亮的小行星质量约占小行星主带的10%,但从未被如此近观过。在过去几周里,“黎明号”成为第一个接近灶神星的航天器,当它到达轨道,它拍下了这张照片。这些初期照片表明灶神星年岁已老、满目苍痍,陨石坑、山丘、凹痕和悬崖处处可见。
 楼主| 发表于 2011-7-19 19:30 | 显示全部楼层
Studying Vesta may give clues to the formative years of our early Solar System, as the unusual world may be one of the largest remaining protoplanets. After a year of studying Vesta, Dawn is scheduled to leave orbit and, in 2015, approach the only asteroid-belt object that is larger: Ceres.

研究灶神星或许有助于得到早期太阳系形成的线索,因为灶神星这个不同寻常的世界也许是残留的最大原行星之一。一年后,黎明号探测器将离开灶神星的轨道,计划在2015年到达谷神星,它是小行星带中唯一一颗比灶神星大的小行星。
发表于 2011-7-19 20:29 | 显示全部楼层
好大的沙发,不客气先坐下。

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