| 释义 |
- 1
The existence of so many neighbours suggests that planetary systems tend to be stable, and stability is good for the evolution of life. 这么多邻居的存在说明了行星体系越来越趋向稳定，而这种稳定对生命的进化起着十分积极的作用。 - 2
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。 - 3
Of course, gazing into the Cat's Eye, astronomers may well be seeing the fate of our sun, destined to enter its own planetary nebula phase of evolution ... 当然，天文学家在观察“猫眼”时，就可能也看到了我们的太阳的命运，它最终注定会进入行星星云的演化阶段……
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