ORIGO:挑战星子形成理论的任务概念

R. Marschall, N. Thomas, S. Ulamec, S. Hviid, S. Mottola, J. Vincent, F. Ferri, A. Hérique, D. Plettemeier, Á. Kereszturi, M. Lavagna, J. Prinetto, Alice Dottori, A. Falke, Francisco da Silva Pais Cabral
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摘要

彗星通常被认为是太阳系中最原始的物体之一。因此,人们一直在努力了解这些天体。在过去的几十年里,我们在对星子/彗星(彗星的前体)形成的理论理解方面取得了重大进展。最近的太空任务——比如欧洲航天局的罗塞塔号探测67P/丘留莫夫-格拉西门科彗星的任务——提供了不同彗星形成理论支持者声称的观测结果,以验证他们的设想。然而,没有一个单一的地层模式可以得到明确的证明。考虑到了解太阳系中第一批天体是如何形成的重要性,我们提出了一个专门的任务来解决这个问题。ORIGO将把一个着陆器送到彗星核的表面,在那里它将描绘出地下前5米的特征。通过遥感仪器和将有效载荷部署到钻孔中,我们将能够研究古代未改性材料的物理化学结构。该任务的设计符合欧空局m级任务预算。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
ORIGO: A mission concept to challenge planetesimal formation theories
Comets are generally considered among the most pristine objects in our Solar System. There have thus been significant efforts to understand these bodies. During the past decades, we have seen significant progress in our theoretical understanding of planetesimal/cometesimals (the precursors of comets) formation. Recent space missions—such as ESA’s Rosetta mission to comet 67P/Churyumov-Gerasimenko—have provided observations claimed by proponents of different comet formation theories to validate their scenarios. Yet, no single formation paradigm could be definitively proven. Given the importance of understanding how the first bodies in our Solar System formed, we propose a dedicated mission to address this issue. ORIGO will deliver a lander to the surface of a cometary nucleus where it will characterise the first five m of the subsurface. With remote sensing instruments and the deployment of payload into a borehole, we will be able to study the physico-chemical structure of ancient, unmodified material. The mission has been designed to fit into the ESA M-class mission budget.
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