© Copyright, Princeton University Press. No part of this book may be distributed, posted, or reproduced in any form by digital or mechanical means without prior written permission of the publisher. CHAPTER 1 “TO SEEK OUT NEW LIFE . .” The opening sequences of both TOS and TNG mention that their mission is “to seek out new life.” While many viewers think of this mission in the context of other humanoid life forms depicted in the series, such as the Vulcans or Klingons or An dorians, fewer think of it in the context of entirely unfamiliar forms. Is such unfamiliar life likely, and what might a “new life form” look like? The first section of this chapter examines briefly the question of what “life” actually means and begins to exam ine its probability of occurrence. Many biology textbooks pro vide lists of characteristics of living organisms, but exceptions to some items in these lists abound even on our own planet. Might we expect similar forms to have arisen elsewhere in the universe? Furthermore, these lists are artificial in the sense that they were made based on observations of known organisms on Earth rather than derived from fundamental principles of bi ology and chemistry. Much of life is, for example, water and carbon based, but are these properties general to life or idiosyn cratic to the observed single set of related life forms on Earth? The second section of the chapter goes into several properties as sociated with life on Earth, and considers what alternatives may be possible. For general queries, contact
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