The aim of the project is to study what happens to biological and organic materials captured by a passing spacecraft at speeds of 1 and 5 km/s.

该项目的目的是研究以 1 公里/秒和 5 公里/秒的速度经过的航天器捕获的生物和有机材料会发生什么情况。

• 批准号: 1938208
• 金额: --
• 依托单位: University of Kent
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2017
• 资助国家: 英国
• 起止时间: 2017 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-1938208
• 关键词: aim; project; study; what; happens

We will use our light gas gun to recreate impacts and then study the results with a variety of experimental techniques. We will do this to assist in defining the instruments to be built in the US which will fly on a mission to Enceladus. The PhD student will play a major role in this work.Background: The Saturnian moon, Enceladus has an ice surface with a sub-surface ocean of liquid water. Due to internal pressures, cracks appear in the ice and water plumes have been observed erupting into space. Similarly the Jovian moon Europa has an icy surface, sub-surface ocean and plumes (occasionally observed and which may be triggered by impacts). A NASA mission is to fly by Enceladus in the mid-2020s and try to sample the plumes. If life is present in the ocean on Enceladus its discovery will be one of the most important scientific discoveries of the age. Even without life being discovered, this mission will be the first ever investigation of an ocean on another world.We have also been constructing icy spheres with interior oceans and impacting them to see how they break apart and generate plumes during impacts. The PhD student will also continue this and see how materials placed in the water subsequently emerge in the plumes, i.e. how representative of the interior ocean are the contents of the plumes?

我们将使用轻气枪重现撞击，然后通过各种实验技术研究结果。我们这样做是为了协助确定将在美国建造的仪器，这些仪器将执行土卫二任务。博士生将在这项工作中发挥重要作用。 背景：土星卫星土卫二有一个冰表面，其地下有液态水海洋。由于内部压力，冰中出现裂缝，并且观察到水羽流喷发到太空中。同样，木星卫星欧罗巴也有冰冷的表面、地下海洋和羽流（偶尔观察到，可能是由撞击触发的）。 NASA 的一项任务是在 2020 年代中期飞越土卫二并尝试对羽流进行采样。如果土卫二海洋中存在生命，它的发现将成为这个时代最重要的科学发现之一。即使没有发现生命，这项任务也将是对另一个世界海洋的首次调查。我们还一直在建造具有内部海洋的冰球体并撞击它们，以了解它们在撞击过程中如何分裂并产生羽流。博士生还将继续这个研究，观察放入水中的物质随后如何出现在羽流中，即羽流的内容物如何代表内部海洋？