panspermia

简明释义

英[pænˈsɜr.mi.ə]美[pænˈsɜr.mi.ə]

n. 有生源说（等于 panspermatism, panspermy）；胚种论

英英释义

单词用法

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例句

1.The panspermia hypothesis posits that living cells or their precursors could have emerged on another planet or moon billions of years ago and hitched a ride to Earth on a meteorite.

“胚种假说”假设：活细胞或其前驱物可能于数十亿年前发源自其它行星或月球上，并且搭陨石的便车来到地球。

2.If this were true, it would also give excellent evidence to support the theory of "panspermia."

如果这项结论成立，它将为“有生源说(panspermia)”理论提供有力的证据。

3.The panspermia hypothesis posits that living cells or their precursors could have emerged on another planet or moon billions of years ago and hitched a ride to Earth on a meteorite.

“胚种假说”假设：活细胞或其前驱物可能于数十亿年前发源自其它行星或月球上，并且搭陨石的便车来到地球。

4.Researchers plan to evaluate the likelihood of panspermia by studying whether microorganisms can survive an interplanetary journey.

研究人员打算研究：微生物是否可以在星际旅行中存活，并据以评估胚种说存在的可能性。

5.For panspermia to occur, however, microorganisms need to survive not only ejection from the first planet and atmospheric entry to the second but the interplanetary voyage itself.

然而，胚种说真要发生，微生物除了从第一颗行星喷发、进入第二颗行星的大气时必须幸存之外，还要能在整个行星际旅程中保住小命。

6.The professor and his late colleague Sir Fred Hoyle championed the so-calledd " panspermia" theory from the 1960s.

自从上世纪60年代起，维克拉马辛教授和他的已故同事霍伊尔便倡导“有生源说（或称：胚种论）”的理论。

7.That raises the possibility that life on Earth arrived here on a meteorite - a concept called panspermia.

这也为一种叫做有生源说的概念提供了可能性，这一概念认为地球上的生命是由小行星带来的。

8.Astrobiologists are interested in panspermia because it could explain how life spreads throughout the universe.

天体生物学家对泛种论感兴趣，因为它可以解释生命如何在宇宙中传播。

9.The theory of panspermia suggests that life on Earth may have originated from microorganisms brought here by comets.

泛种论理论认为，地球上的生命可能起源于由彗星带来的微生物。

10.The concept of panspermia raises questions about the origins of life beyond our planet.

泛种论的概念引发了关于我们星球之外生命起源的问题。

11.Research into panspermia has led to experiments simulating space conditions to test microbial survival.

对泛种论的研究促使科学家进行模拟太空条件的实验，以测试微生物的生存能力。

12.Some scientists believe that panspermia could account for the similarities in genetic material across different species.

一些科学家认为泛种论可以解释不同物种之间遗传物质的相似性。

作文

The concept of panspermia suggests that life exists throughout the universe and is distributed by meteoroids, asteroids, comets, and planetoids. This theory proposes that microscopic life forms, or even the basic building blocks of life, can travel through space and potentially seed life on other planets. The idea of panspermia has intrigued scientists for centuries, as it raises profound questions about the origin of life on Earth and the possibility of life beyond our planet.One of the most fascinating aspects of panspermia is its implications for astrobiology, the study of life in the universe. If life can indeed be transferred across celestial bodies, then it opens up new avenues for understanding how life could exist in extreme environments. For instance, certain microorganisms are known to survive in the harsh conditions of outer space, which supports the idea that life could withstand the journey between planets. This resilience suggests that life might not be as rare as previously thought, and that the universe could be teeming with life waiting to be discovered.Additionally, the implications of panspermia extend to our own planet's history. Some theories propose that life on Earth may have originated from extraterrestrial sources. For example, meteorites containing organic compounds have been found on Earth, leading some scientists to speculate that these materials could have contributed to the development of life here. This perspective challenges the traditional view of abiogenesis, which posits that life arose independently on Earth through natural processes.Moreover, panspermia also invites philosophical considerations regarding our place in the universe. If life is widespread and interconnected through cosmic events, it raises questions about the uniqueness of human existence. Are we merely one of many intelligent species scattered across the cosmos? This thought can be both humbling and exhilarating, as it encourages a broader understanding of life and our role within the universe.However, the theory of panspermia is not without its challenges. Critics argue that while the idea is intriguing, there is currently insufficient evidence to support it conclusively. The mechanisms by which life could survive the extreme conditions of space travel, such as radiation and vacuum, need further exploration. Additionally, the question of how life could evolve once it reaches a new environment remains unanswered. These challenges highlight the need for continued research in this field.In conclusion, the concept of panspermia offers a captivating perspective on the origins of life and the potential for life elsewhere in the universe. It encourages scientific inquiry and philosophical reflection, pushing us to reconsider our understanding of life’s beginnings and its vast possibilities. As we continue to explore the cosmos, the idea of panspermia serves as a reminder of the interconnectedness of all life and the mysteries that still await discovery. The search for extraterrestrial life is not just a quest for understanding our universe; it is also a journey to understand ourselves and our place within the grand tapestry of existence.

“种子传播”这一概念表明，生命在宇宙中普遍存在，并通过陨石、小行星、彗星和行星体进行传播。这一理论提出，微生物生命形式，甚至生命的基本构成要素，可以通过太空旅行并可能在其他星球上播种生命。“种子传播”的想法吸引了科学家们几个世纪，因为它引发了关于地球生命起源和我们星球以外生命可能性的深刻问题。“种子传播”最迷人的方面之一是它对天体生物学的影响，即研究宇宙中生命的学科。如果生命确实可以在天体之间转移，那么它为理解生命如何在极端环境中存在打开了新的途径。例如，某些微生物被认为能够在外层空间的恶劣条件下生存，这支持了生命能够承受行星间旅行的观点。这种韧性表明，生命可能并不像以前认为的那样稀有，宇宙中可能充满了等待被发现的生命。此外，“种子传播”的影响还延伸到我们自己星球的历史。一些理论提出，地球上的生命可能起源于外星源。例如，含有有机化合物的陨石已在地球上被发现，这导致一些科学家推测这些材料可能对生命的发展有所贡献。这种观点挑战了传统的自生论观念，该观念认为生命通过自然过程独立在地球上产生。此外，“种子传播”还邀请哲学思考我们在宇宙中的位置。如果生命是广泛存在并通过宇宙事件相互联系的，那么它就提出了关于人类存在独特性的问题。我们是否仅仅是散布在宇宙中的许多智慧物种之一？这一想法既令人谦卑又令人兴奋，因为它鼓励对生命及我们在宇宙中的角色有更广泛的理解。然而，“种子传播”理论并非没有挑战。批评者认为，尽管这一想法引人入胜，但目前缺乏足够的证据来确凿支持它。生命如何在太空旅行的极端条件（如辐射和真空）中生存的机制需要进一步探讨。此外，生命在新环境中如何进化的问题仍未得到解答。这些挑战突显了该领域继续研究的必要性。总之，“种子传播”这一概念为生命的起源和宇宙中生命的潜力提供了引人入胜的视角。它鼓励科学探究和哲学反思，推动我们重新考虑生命的起源及其广阔可能性。随着我们继续探索宇宙，“种子传播”这一思想提醒我们所有生命的相互联系以及仍待发现的奥秘。寻找外星生命不仅是对我们宇宙的理解追求；也是了解我们自己及其在存在的宏伟织锦中的位置的旅程。