Astronomy Beat is a twice-monthly, on-line column written by "insiders" from the worlds of astronomy research and outreach available exclusively to members of the Astronomical Society of the Pacific. As a public service, the nonprofit Society is making the issue on the origin of the Drake equation freely available to everyone.
April 5, 2010
Astronomy Beat #46
The Origin of the Drake Equation (PDF, 716 KB)
by Frank Drake and Dava Sobel
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