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.
Home page url
Download or read it online for free here:
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 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.
by Douglas A. Vakoch - NASA
Addressing a field that has been dominated by astronomers, physicists, and computer scientists, the contributors to this collection raise questions about the ease of establishing meaningful communication with an extraterrestrial intelligence.
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.