When Biospheres Collide: A History of NASA's Planetary Protection Programs
by Michael Meltzer
Publisher: NASA 2011
Number of pages: 542
This book presents the history of planetary protection by tracing the responses to the microbiological contamination concerns on NASA's missions to the Moon, Mars, Venus, Jupiter, Saturn, and many smaller bodies of our solar system.
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by Lucas J. Mix, at al. - arXiv
Astrobiology aims to understand the fundamental nature of life on earth and the possibility of life elsewhere. This text has been created as a reference tool for those who are interested in this interdisciplinary field of astrobiology.
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The GHZ is that region in the Milky Way where an Earth-like planet can retain liquid water on its surface and provide a long-term habitat for animal-like aerobic life. In this paper we examine the dependence of the GHZ on Galactic chemical evolution.
by Alfred R. Wallace - Chapman and Hall
Contents: early ideas; modern ideas; the new astronomy; the distribution of the stars; distances of stars - the sun's motion; unity and the evolution of the star-system; are the stars infinite?; our relation to the Milky Way; and more.
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In the late twentieth century, scientists converged upon the basic idea of scanning the sky and 'listening' for non-random patterns of electromagnetic emissions in order to detect another possible civilization somewhere else in the universe.