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

我们的太阳系是4.6Ga前由星际气体和尘埃组成的坍塌云形成的。关于我们的地球和行星的起源以及探测类似地球的、可能有生命的行星的前景的问题，具有巨大的公众和科学兴趣。在建造地球和其他行星的过程中，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，由尘埃组成的小行星的融合。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遗留下来的物质以及星尘飞行任务返回的陨石或彗星尘埃样本来揭示。优先方案旨在启动并提供手段，对太阳系早期小行星形成的关键方面进行全面和跨学科的研究。优先方案特别及时，因为地外材料和新的分析技术的可获得性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大幅增加。优先方案将使现有研究小组和青年研究小组相互联系，并将为有前途的青年科学家提供培训和教育机会。这项研究具有国家战略意义，因为它将保持我国分析未来样品返回任务中的外星物质的能力。

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.