Crescent Rhea Occults Crescent Saturn（土卫五掩土星）

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2006 July 11
2006 年 07 月 11 日


http://www.phys.ncku.edu.tw/~ast ... hea_cassini_big.jpg

Crescent Rhea Occults Crescent Saturn
Credit: Cassini Imaging Team, SSI, JPL, ESA, NASA
Explanation: Soft hues, partially lit orbs, a thin trace of the ring, and slight shadows highlight this understated view of the majestic surroundings of the giant planet Saturn. Looking nearly back toward the Sun, the robot Cassini spacecraft now orbiting Saturn captured crescent phases of Saturn and its moon Rhea in color a few months ago. As striking as the above image is, it is but a single frame from a recently released 60-frame silent movie where Rhea can be seen gliding in front of its parent world. Since Cassini was nearly in the plane of Saturn's rings, the normally impressive rings are visible here only as a thin line across the image center. Cassini has now passed the official half-way mark of its mission around Saturn, but is well situated to complete another two years investigating this complex and surprising system

土卫五掩土星

影像提供：Cassini Imaging Team, SSI, JPL, ESA, NASA

说明：柔和的色彩、部份被照亮的球体、薄薄的行星环和淡淡的暗影，点亮了这张朴素的图像中土星这颗气态大行星周围宏伟的景色。几个月前，正在探索土星的卡西尼号太空船几乎是回望着太阳，拍下了这幅新月状 土星和土卫五的彩色影像。上面这幅令人印象深刻的影像，只是最近发布的60帧电影的一个定格而已；这部电影呈现了土卫五滑过行星前方的情景。当时卡西尼号几乎位于土星环面上，因此通常很壮观的行星环，在此时看起来只是一道纵贯过图像中央的细线而已。卡西尼号刚刚通过它土星探测任务期的中点，还有2年的时间可用来探索这个复杂且令人惊奇的行星系统。

[ 本帖最后由 夜猫子 于 2006-7-17 11:55 PM 编辑 ]

b777200

一个土卫的剪影！！！

夜猫子

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