Cosmic Search, Volumes 1-3

antenna appeared astronomy atmosphere atoms become called Center civilizations communication continue COSMIC SEARCH course detect direction Director discussed distance Drake earth effect energy engineering evolution example existence extraterrestrial fact frequency future galaxy give given hole human hydrogen idea Institute intelligent interest interstellar issue John less light limit living look magazine mass means measured million moon NASA nature objects observations Observatory Ohio orbit organization origin perhaps physics planetary planets possible present probably problem Project published question radiation radio range reason received Research satellite scientific scientists SETI signals Society solar system space stars suggested telescope things tion turn United universe wavelength waves York