Intelligent Life in the Universe"A translation, extension, and revision of [the author's Vselennai︠a︡, zhiznʹ, razum]". Bibliography: p. 489-495. |
Contents
Preface by Carl Sagan | 2 |
Extraterrestrial life as a psychological projective test | 12 |
Chapter | 26 |
Copyright | |
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angular momentum appears approximately astronomer atmosphere atoms billion biological bright Chapter chemical clouds clusters color cosmic Courtesy of Mt craters dark areas Deimos density detected disk distance dust Earth electrons emitted energy environment evolution example exosphere extraterrestrial Figure formed frequency Galactic galaxies helium Hertzsprung-Russell diagram hydrogen hypothesis increase infrared intelligent interstellar medium Jupiter large number laser lifetime light lines living systems luminosity magnetic field magnitude main sequence Mars Martian mass material microorganisms molecular Moon motion nebula nucleic acids nucleus observations occur optical orbit origin oxygen Palomar Observatories panspermia parsecs particles period Phobos photograph planet planetary systems polar possible present primitive protons protostar radiation radio emission radius red giant region relatively rotation satellites sec¹ secular acceleration signal solar system Soviet space spacecraft spectral type spectrum stars stellar supernova technical civilization telescope temperature terrestrial transmitted ultraviolet universe velocity Venus wavelengths Wilson and Palomar