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Solar System 太阳系的诞生 科学新发现

The solar system is the sun and everything that travels around it. This includes eight planets, dwarf planets, moons, asteroids, and comets. The sun holds every object in place with its strong gravity...

太阳系的形成与演化始于约46亿年前巨大分子云局部引力坍缩,中心形成太阳,剩余物质构成原行星盘并逐渐形成行星及其他天体.