The Cassini mission around Saturn has now been extended to 2017 to better study the complex planetary system as its season changes from equinox to solstice.
卡西尼环绕土星的任务目前已延长至2017年，以在其春秋分到冬夏至的季节变化时更好地研究这个复杂的行星系统。
NASA does have a planetary protection program where spacecraft are sterilized and sometimes destroyed at end-of-mission.
NASA的确有行星的保护计划。例如宇宙飞船是消毒过的，有时候在任务完成后会被销毁。
Atlantis' astronauts will install a new "wide-field planetary camera" during their 11-day maintenance-and-repair mission, the fifth to the telescope.
亚特兰蒂斯号宇航员将在为其11天的维修任务中为哈勃望远镜更换一部新的“广视角行星照相机”，这是对哈勃望远镜的第五次维修。
For instance the mission would teach engineers how to capture an uncooperative target which could be good practice for future planetary defense missions he added.
例如，这次任务将使工程师们学会如何捕获不合作的目标，这将是未来行星防御的一次好的实践，他补充道。
Caligastia: the former Planetary Prince, who entered into the Lucifer Rebellion and as above, assisted in the miscarriage of the Adam and Eve mission.
卡里迦夏：前任行星王子，他参与了路西法反叛，导致了亚当和夏娃使命的流产。
Chris McKay, a planetary scientist at NASA's Ames research centre, in California, points out that, as Cassini has already demonstrated, the water jets make a mission easy.
NASA位于加利福尼亚州艾姆斯研究中心的卫星科学家克里斯·麦凯指出，正如卡西尼号已经证明的那样，水射流能够让任务变得简单。
Chris McKay, a planetary scientist at NASA's Ames research centre, in California, points out that, as Cassini has already demonstrated, the water jets make a mission easy.
NASA位于加利福尼亚州艾姆斯研究中心的卫星科学家克里斯·麦凯指出，正如卡西尼号已经证明的那样，水射流能够让任务变得简单。
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