铺垫：太阳系的早期历史
Setting the Stage: The Early History of the Solar System
AI总结：
本文从天体生物学视角，结合陨石与天文观测证据，追溯太阳系早期关键生命分子的起源，梳理太阳与行星形成过程及太阳高能辐射对类地行星演化的影响。
AI中文摘要：
本文从天体生物学视角综述太阳系的早期历史，并呈现来自陨石与天文观测的证据，目的是追溯参与生命构建单元形成的关键分子的起源。太阳及其行星系统始于分子云的一部分，该部分坍缩形成原行星盘；原行星盘中心的原太阳加热周围物质，距原恒星较远区域的尘埃与气体保持分子云的原始状态，而气体中及尘埃的冰幔上则生成新化合物。尘埃吸积成卵石，卵石形成星子，星子碰撞并吸积卵石形成行星；与此同时，原太阳核心达到氢聚变为氦所需的压力与温度后成为太阳，此过程中太阳释放的高能辐射与粒子影响了原行星盘内的化学过程及类地行星的早期演化。
英文摘要：
This article reviews the early history of our solar system from an astrobiological perspective and presents evidence from meteorites and astronomical observations. The purpose is to trace the formation of key molecules that participated in the building blocks of life. The Sun and its planetary system started from a section of a molecular cloud that collapsed into a protoplanetary disk. In the center of the protoplanetary disk, the protosun heated the surrounding material. The dust and gas inherited from the cloud remained pristine farther away from the protostar, while new compounds were created in the gas and on the icy mantles of the dust. The dust accreted into pebbles, pebbles formed planetesimals, and planetesimals collided and accreted pebbles to create planets. Meanwhile, the protosun became the Sun when its core reached the pressure and temperature required to transform hydrogen into helium. During this process, the Sun emitted high-energy radiation and particles that impacted the chemistry in the disk and the early evolution of the terrestrial planets.
