赫拉克利特希腊哲学家，他坚持斗争和变化是宇宙的自然状态的观点
Greek philosopher who maintained that strife and change are natural conditions of the universe.
有生源说，胚种论一种学说，认为来自宇宙空间的微生物或生物化学物是地球上生命的起源，并且在宇宙的其他部分可能有适合的大气状况存在
The theory that microorganisms or biochemical compounds from outer space are responsible for originating life on Earth and possibly in other parts of the universe where suitable atmospheric conditions exist.
宇宙结构学研究有形宇宙的科学，其中包括地理学和天文学
The study of the visible universe that includes geography and astronomy.
我们开始探索宇宙的奥秘。
We begin to plumb the mysteries of the universe.
