Are We Alone?
by Gregg Easterbrook
Publisher: The Atlantic Monthly 1988
Scanning the universe to see if we have company has fallen out of favor among many scientists, but the true believers who continue to search raise diverting questions -- like why planets form where they do, and how life began, and where we might end up.
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by G. Gonzalez, D. Brownlee, P. Ward - arXiv
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 Stephen H. Dole - RAND Corporation
The book examines and estimates the probabilities of finding planets habitable to man and where they might be found. The author presents in detail the characteristics of a planet that can provide an acceptable environment for humankind.
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.
by Mike Corwin - Bookboon
A textbook intended for a one-semester course in Astronomy. After introductory chapters on the history of astronomy, it is narrowly focused on material directly and chronologically related to the eventual rise of conscious beings in the universe.