Based on current theories of planetary evolution, any extraterrestrials observing the solar system 4 billion years ago would have seen oceans on Venus, Earth, and Mars.
基于现在星球进化的理论，四十亿年前任何外星人观察太阳系都会发现在金星，地球和火星上有海洋存在。
These gravitational effects have a subtle, but apparently significant influence on the evolution of planetary orbits in the solar system.
这些引力作用对太阳系行星轨道的演变具有微妙而又明显重要的影响。
Each planet in the solar system in different stages of the evolution process of the planet, with different characteristics.
太阳系各行星都处在行星演化进程的不同阶段，具有不同的特征。
Comparative planetary geology is a frontier discipline on exploring nature and evolution of human being, and a key to reaching the three major goals of Solar system exploration.
比较行星地质学是人类认识自然和人类本身形成与演化的前缘学科，是实现太阳系探测三大科学目标的主要手段。
The isotopic composition of solar system is the base for studying the origin and evolution of the solar system.
太阳系原始同位素组成是研究太阳系起源和演化的基础。
Therefore, the whole lithosphere shows distinct formation features of the whirlpools. The evolution of the earth is related to the movement law of the solar system in the galaxy.
地球的演化与太阳系在银河系中的运动规律有关，周期性的银河天体撞击使规律性的全球旋涡构造受到银河年周期的撞击破坏。
Therefore, the whole lithosphere shows distinct formation features of the whirlpools. The evolution of the earth is related to the movement law of the solar system in the galaxy.
地球的演化与太阳系在银河系中的运动规律有关，周期性的银河天体撞击使规律性的全球旋涡构造受到银河年周期的撞击破坏。
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