Sagan vs. Seeds

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Justin Reeder

Mrs. Harper

Astronomy

December 9, 2007

Word Count: 1,119

Life on Other Worlds

        The author of our textbook Foundations of Astronomy, Michael A. Seeds, has his own opinion and style of writing. Seeds uses a lot of evidence and other peoples work to show his arguments and his opinions. He uses a unique style that captures the audience’s attention. “Might life exist in other solar systems? To consider this question, you need to consider how common planets are and what conditions a planet must fulfill for life to originate and evolve to intelligence. The first question is astronomical; the second is biological,” (Seeds 664). This is an example of his style of presentation how he makes you as the reader answer questions and form your own opinion of what you believe is true. This is also the objective of his presentation. I believe that he wants you to form your own hypothesis and own theory from evidence he finds.

        The author of Cosmos, Carl Sagan, uses his own style of writing as well. He talks a lot about the possibility of life on other planets and asks many questions. “All my life I have wondered about the possibility of life elsewhere. What would it be like? Of what would it be made of? All living things on our planet are constructed of organic molecules complex microscopic architectures in which the carbon atom plays a central role. There was once a time before life, when the earth was barren and utterly desolate. Our world is now overflowing with life. How did it come about?” (Sagan 13). Sagan does this a lot and I believe that his audience is meant for the older type of people. Younger persons can’t understand his complex style of writing and the questions he uses. “Is extraterrestrial life, if it exists, based on the same organic molecules as life on Earth? Do the beings of other worlds look much like life on Earth? Or are they stunningly different other adaptations to other environments? What else is possible?” (Sagan 13).

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        Seeds draws many conclusions in each of the sections of Chapter 26. He concludes that life between stars is almost impossible. “Practically speaking, roaming among the stars is tremendously difficult because of three limitations: distance, speed, and fuel.” (Seeds 666). The distance between the stars is so great it’s hard to imagine. Even if you could travel the speed of light it would take around 40 years to reach the nearest star. And if you were to travel a great distance and a great speed you would need so much fuel for just the trip there.

        Another conclusion Seeds ...

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