Solar System Astronomy

太阳系天文学

• 批准号: 312108-2008
• 负责人: Wiegert, Paul
• 金额: $ 1.86万
• 依托单位: University of Western Ontario
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2011
• 资助国家: 加拿大
• 起止时间: 2011-01-01 至 2012-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=481139
• 关键词: Solar; System; Astronomy

Our solar system contains the answers to some of our most fundamental questions. What is our origin? Could there be more of us (life) out there? Yet the current state of our solar system depends critically on the details of its as-yet-poorly understood formation process. This process occured 4.5 billion years ago but many clues remain, some in unlikely places. Fundamental to the question of origins are the small bodies of our solar system: asteroids, comets and meteoroids. The large bodies such as the Sun and planets are also important of course but have been subjected to substantial alteration over their lifetimes. Consider the Earth: the physical, chemical, geological and even biological processing it has undergone is tremendous. Smaller bodies, being geologically quiet, have remained largely unchanged since early times. Much key information that has been erased from the larger bodies remains "fossilized'' in the smaller ones.

我们的太阳系包含了一些最基本问题的答案。我们的起源是什么？还会有更多的我们(生活)在那里吗？然而，我们太阳系的当前状态在很大程度上取决于其形成过程的细节，目前人们对此知之甚少。这一过程发生在45亿年前，但许多线索仍然存在，其中一些是在不太可能的地方。起源问题的根本是我们太阳系的小天体：小行星、彗星和流星体。像太阳和行星这样的大天体当然也很重要，但在它们的一生中经历了巨大的变化。以地球为例：它经历了巨大的物理、化学、地质甚至生物过程。较小的天体在地质上很安静，自早期以来基本保持不变。从较大的躯体中抹去的许多关键信息在较小的躯体中仍然“僵化”。