By Jeffrey O. Bennett, Seth Shostak
For intro-level, one-semester multidisciplinary technology and astronomy courses.
Encourage scholars to discover solutions to questions on existence past Earth and our sun system.
Life within the Universe provides a terrific place to begin for non-science majors intrigued via the most recent discoveries approximately existence within the sunlight method and past. carefully researched and obtainable to scholars of all backgrounds, the textual content introduces techniques drawn from astronomy, biology, and geology to provide an explanation for common phenomena and to discover profound medical questions about astrobiology. The Fourth Edition has been completely revised and up-to-date to incorporate the most recent clinical discoveries and developments, together with new information about extrasolar planets, synthetic existence, and youth on Earth.
Designed for classes in astrobiology, Life within the Universe arouses scholars’ traditional interest through exploring basic questions reminiscent of: How did lifestyles start in the world? What are the main severe varieties of lifestyles at present recognized? What will we find out about the potential of existence past Earth?
The textual content encourages non-science majors to increase an realizing of the method of technology via its inherently compelling subject material in addition to its wealth of attractive beneficial properties, together with studying ambitions, certain subject matters, and connections to pop culture. Sidebars offer not obligatory mathematical fabric for classes that satisfy quantitative requirements.
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Extra resources for Life in the universe
Example text
Copernicus saw the first printed copy of his book on the same day that he died—May 24, 1543. Publication of the book spread the Sun-centered idea widely, and many scholars were drawn to its aesthetic advantages. Nevertheless, the Copernican model gained relatively few converts over the next 50 years, and for a good reason: It didn’t work all that well. The primary problem was that while Copernicus had been willing to overturn Earth’s central place in the cosmos, he had held fast to the ancient belief that heavenly motion must occur in perfect circles.
These periods of apparent retrograde motion (retrograde means “backward”) last from a few weeks to a few months, depending on the planet. This seemingly erratic planetary motion was not so easy to explain with rotating spheres, especially because the Greeks generally accepted a notion of “heavenly perfection,” enunciated most clearly by Plato, which demanded that all heavenly objects move in perfect circles. How could a planet sometimes go backward when moving in a perfect circle? The Greeks came up with a number of ingenious ideas that preserved Earth’s central position, culminating with a complex model of planetary motion described by the astronomer Ptolemy (c.
How strong are their convictions on this issue? In light of your findings and what you’ve learned in this chapter, discuss whether public interest in aliens visiting Earth has any bearing on the scientific study of astrobiology. 22. Conducting the Search. Given the large number of possible places to look for life, how would you prioritize the search? In other words, where would you look first for life on other worlds in our own solar system, and how would you come up with a search strategy for other star systems?