SPP 1385: The first 10 Million Years of the Solar System - A Planetary Materials Approach

我们的太阳系形成于4.6 Ga前，由星际气体和尘埃的坍塌云组成。关于地球和行星的起源问题--以及探测类地行星的前景--引起了公众和科学界的极大兴趣。地球和其他行星形成过程中最重要和最关键的一步，可能是在太阳系存在的最初几百万年里，尘埃中的微行星的聚合。这一步骤所涉及的机制和速率可以通过分析这一生长过程中遗留下来的物质来揭示，这些物质可以作为星尘使命返回的陨石或彗星尘埃样品获得。该优先方案的目的是发起并提供手段，对早期太阳系中小行星形成的关键方面进行全面的跨学科研究。由于可获得的地外材料和新的分析技术提供了新的研究机会，再加上世界各国计划的空间飞行任务急剧增加，优先方案特别及时。该优先计划将把现有的研究小组和年轻的研究小组联系起来，并将为有前途的年轻科学家提供培训和教育机会。这项研究具有国家战略重要性，因为它将保持我国分析未来样本返回任务中的地外物质的能力。

Our solar system formed 4.6 Ga ago from a collapsing cloud of interstellar gas and dust. Questions about the very origin of our Earth and planets - and the prospect of detecting Earth-like, potentially life-harbouring planets - are of tremendous public and scientific interest. The most important and critical step in building the Earth and other planets was probably the coalescence of planetesimals out of dust in the first few million years of our solar systems existence. The mechanisms and rates involved in this step can be revealed by analysing material left over from this growth process and accessible as meteorites or cometary dust samples returned by the STARDUST mission. The Priority Programme aims to initiate and provide the means for comprehensive and interdisciplinary studies on key aspects of planetesimal formation in the early solar system. The Priority Programme is particularly timely due to the new research opportunities provided by the availability of extraterrestrial materials and new analytical technology, combined with a dramatic increase in planned space missions by nations around the world. The Priority Programme will crosslink both established and young research groups and will provide training and education opportunities for promising young scientists. The research is of national strategic importance, as it will maintain our national capability of analysing extraterrestrial material from future sample return missions.